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Rod Shaped Bacteria

Venture into the intriguing world of microbiology with a comprehensive analysis of rod shaped bacteria. This feature offers an in-depth understanding of this ubiquitous form of bacteria, including their basic definition, diverse examples, and their distinctive characteristics. Unearth the role of rod shaped bacteria in disease transmission, treatment approaches and real-world examples of their impact. With pertinent research findings, this feature sheds light on their significant implication in the domain of microbiology, providing an invaluable resource for both beginners and seasoned scholars. Dive in and discover the remarkable dimension of rod shaped bacteria.

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Rod Shaped Bacteria

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Venture into the intriguing world of microbiology with a comprehensive analysis of rod shaped bacteria. This feature offers an in-depth understanding of this ubiquitous form of bacteria, including their basic definition, diverse examples, and their distinctive characteristics. Unearth the role of rod shaped bacteria in disease transmission, treatment approaches and real-world examples of their impact. With pertinent research findings, this feature sheds light on their significant implication in the domain of microbiology, providing an invaluable resource for both beginners and seasoned scholars. Dive in and discover the remarkable dimension of rod shaped bacteria.

Understanding Rod Shaped Bacteria

Among the numerous types of bacteria that exist, you'll find a group known as rod shaped bacteria. These microorganisms are fascinating, primarily due to their shape, which separates them from other bacterial forms. They are a staple in any microbiology study, and understanding them offers significant insights into the extensive microbial world.

Rod Shaped Bacteria: A Basic Definition

Rod shaped bacteria, as the name suggests, are bacteria that take a rod-like structure. They fall under the category of bacilli in bacterial classification and are known for their ability to form spores, giving them a survival advantage in harsh environments.

These bacteria exhibit different arrangements due to their shape and the way they divide. Some common arrangements include:

  • Diplobacilli: Pairs of bacilli
  • Streptobacilli: Chains of bacilli
  • Palisades: Bacilli arranged side by side
  • Coccobacilli: Short and plump bacilli

Diverse Examples of Rod Shaped Bacteria

There's a vast array of rod shaped bacteria, each having distinct properties, features, and effects. For instance:

Escherichia Coli: This common bacterium resides in the intestines of humans and is usually harmless. Some strains can however cause intestinal diseases.
Bacillus Anthracis: This rod shaped bacterium causes anthrax, affecting both humans and animals.

These examples indicate the variance in the roles they play, from living harmlessly inside us to causing severe diseases.

It is remarkable how much diversity can exist in the microscopic world of bacteria. Despite having the same basic rod shape, these bacteria can vary vastly in their genetic makeup, physiology, and pathogenicity. This fact presents an exciting realm of study for microbiologists.

How Rod Shaped Bacteria are Classified: Bacillus in Focus

Rod shaped bacteria are often classified into the genus Bacillus. Bacillus species are known for their rod shape and their ability to form spores. However, it's essential to clarify a common point of confusion:

Not every rod-shaped bacterium belongs to the Bacillus genus, and not every spore-forming bacterium is a Bacillus.

\( \text{Endospores, a to} \), or create, are highly resistant to environmental stresses such as heat and radiation, giving the Bacillus its competitive edge. Many Bacillus bacteria are harmless, but some are pathogenic, such as Bacillus cereus and Bacillus anthracis.

For instance, Bacillus cereus causes food poisoning whereas Bacillus anthracis is responsible for the deadly illness, anthrax.

Characteristics of Rod Shaped Bacteria

Rod shaped bacteria, commonly referred to as bacilli, present fascinating characteristics. Their unique ability to form endospores, morphological adaptability, and crucial role in various biological aspects make them a significant topic of research within microbiology.

Discriminating between Rod Shaped Bacteria: Gram Negative and Gram Positive

Have you ever wondered how microbiologists differentiate between various types of bacteria? A fundamental technique is using the 'Gram Stain', a method which divides bacteria into two primary groups: Gram-Positive and Gram-Negative.

A Gram-Positive bacterium retains the crystal violet dye used in Gram staining due to its thick peptidoglycan wall, resulting in a violet or blue colour under a microscope. In contrast, a Gram-Negative bacterium does not retain this dye due to its thinner peptidoglycan wall and an extra outer lipid membrane and thus appears red or pink.

As an example, the rod-shaped pathogen Bacillus anthracis is Gram-Positive, while Escherichia coli, also rod-shaped but part of healthy gut flora, is Gram-Negative.

Special Features of Rod Shaped Bacteria - Gram Negative

While both Gram-Positive and Gram-Negative bacilli exhibit intriguing features, Gram-Negative rod-shaped bacteria boast some truly unique aspects. For starters, they have a complex cell wall structure. Beyond the thin peptidoglycan layer, which is sandwiched in the periplasmic space, they have an additional outer membrane composed of lipopolysaccharides (LPS).

Lipopolysaccharides are potent endotoxins, playing a crucial role in the immune response and contribute to making Gram-Negative bacteria particularly tenacious against antibacterial treatments.

Their outer membrane is selectively permeable, offering protection against certain antibiotics, detergents and dyes. Furthermore, many Gram-Negative bacteria have hair-like appendages called "pili" or "fimbriae" that aid in adhesion to host cells.

Distinctive Anatomical Structure of Rod Shaped Bacteria

When you peer at rod shaped bacteria through a microscope, what you're seeing is a product of several anatomical features working in harmony.

  • Cell Wall: This outer covering provides shape, protects the bacteria against osmotic pressure, regulates what enters and exits the cell, and in some cases, assists in pathogenicity.
  • Cell Membrane: Situated beneath the cell wall, it regulates what enters and exits the cell. It is also where vital processes such as energy production occur.
  • Cytoplasm: Filled with water, this segment contains various organic molecules and enzymes that facilitate life processes.
  • Nucleoid: This region contains the majority of the genetic material of the bacterium (DNA).
  • Plasmids: These are small, circular pieces of DNA that carry extra genes separate from those in the nucleoid.
  • Ribosomes: Sites for protein synthesis, scattered throughout the cytoplasm.

More features are characteristic of specific bacteria. For example, some rod shaped bacteria may have flagella, enabling motility, or pili, which aid in genetic material transfer through a process known as conjugation.

However, it's this combination of characteristics – some shared with other bacterial shapes, and some unique to rod shaped bacteria – that make them a distinct and vital group within the phenomenon of life.

Rod Shaped Bacteria and Diseases

While many rod shaped bacteria are harmless or even beneficial to human health, certain types, known as pathogens, are linked to specific diseases. Understanding these bacteria's role in disease causation and transmission can provide valuable knowledge for effective treatment and prevention.

Common Diseases Caused by Rod Shaped Bacteria

Several diseases caused by rod shaped bacteria are well-known due to their prevalence and the severity of the illness they can create. Here is an overview of a few notable ones:

Anthrax: Caused by the rod shaped bacterium Bacillus anthracis, Anthrax is a severe, and often deadly disease, mostly affecting livestock and wild game. Humans can become infected through exposure to affected animals.
Escherichia Coli Infections: E. Coli is a rod-shaped bacterium typically found in the digestive tract. While many strains are harmless, others like E.Coli O157:H7 can cause severe foodborne illness, leading to symptoms such as bloody diarrhoea and abdominal cramps.
Salmonellosis: This type of food poisoning is caused by several strains of the rod shaped bacteria Salmonella. This infection generally leads to diarrhoea, fever, and abdominal cramps within 12 to 72 hours after infection.
Legionnaire's Disease: A type of pneumonia caused by the rod-shaped bacteria Legionella pneumophila. This bacterium thrives in water systems, especially in warm, stagnant water.
Tuberculosis (TB): TB is a chronic disease caused by the rod shaped bacterium Mycobacterium tuberculosis. This bacterium affects mostly the lungs, but can also impact other areas of the body.

While these diseases may present similar symptoms, such as fever and malaise, they have vastly different sources, mechanisms of action, and treatments.

Role of Rod Shaped Bacteria in Disease Transmission

Transmission of disease-causing rod shaped bacteria varies considerably. The method of transfer can depend on factors such as the bacterial species involved, environmental conditions, host resistance and more.

Some rod-shaped bacteria, like E.Coli and Salmonella, are often spread via the "faecal-oral route". This means they can be transmitted through contaminated food or water, or even from person to person. Proper food handling and hygiene practices are vital in preventing these infections.

On the other hand, bacteria like Mycobacterium tuberculosis get transmitted through respiratory droplets when an infected person coughs, sneezes, talks, or sings. Hence, people with TB need to take care to cover their mouth when coughing and to discard tissues safely.

Bacillus anthracis, the bacterium responsible for anthrax, primarily affects livestock. Humans can become infected through exposure to these infected animals or animal products. The bacterium can enter the body through skin wounds, inhalation or ingestion, leading to cutaneous, inhalation or gastrointestinal anthrax, respectively.

Treatment Approaches for Rod Shaped Bacteria Diseases

Treating bacterial infections, regardless of the shape of the bacteria, generally involves the use of antibiotics. These medicines work by damaging essential functions in bacterial cells, such as cell wall synthesis, protein production, and DNA replication or transcription.

For example, Anthrax is treated with several types of antibiotics, including ciprofloxacin, doxycycline, and penicillin. E. Coli infections, however, are usually managed by ensuring adequate hydration and rest while the illness runs its course. Antibiotic treatment is typically reserved for severe or complicated cases.

Tuberculosis treatment requires an extended course of multiple antibiotics, including Isoniazid, Rifampicin, Ethambutol, and Pyrazinamide. This cocktail of drugs is necessary to eliminate the infection and prevent resistance development in the bacteria.

Besides antibiotics, supportive care is vital to help manage symptoms and maintain body function. This may include measures like hydration, pain management, and even hospitalisation in severe cases or when there are life-threatening complications.

While antibiotics can be quite effective, their use must be careful and strategic to prevent the emergence of resistant bacterial strains. Therefore, it is always necessary to complete the prescribed course of antibiotics, even if symptoms improve or resolve early.

Factual Examples of Rod Shaped Bacteria

Analysing real-life examples further emphasises the importance of understanding rod shaped bacteria in microbiology. So, let's journey together into the microscopic realm of the most impressively versatile and adaptable entities on Earth.

Real-World Examples of Rod Shaped Bacteria

Learning about real-world examples provides valuable insight into the role and impact of rod shaped bacteria in everyday life, which shapes a fuller understanding of how these tiny organisms are part of an intricately interconnected biosphere.

Escherichia coli, more commonly known as E. coli, is probably one of the most famously known rod shaped bacteria. Normally present in the intestines of healthy individuals, most strains of E. coli are quite harmless. However, certain strains can cause diseases, ranging from diarrhoea to respiratory illnesses and even urinary tract infections.

Another common rod shaped bacterium is Lactobacillus. These bacteria are essential for many fermentation processes and play a crucial role in the production of yogurt, cheese, pickles, beer, wine, cider, kimchi, chocolate, and other fermented foods. They are also part of our natural gut flora and play a role in maintaining gut health.

Salmonella, a genus of rod-shaped bacteria, is another prime example. Usually living in animal and human intestines and shed through faeces, Salmonella bacteria can lead to salmonellosis, a type of food poisoning with symptoms like fever, diarrhoea, and abdominal cramps.

Clostridium is a genus of rod-shaped bacteria, many species of which can produce endospores (a survival structure that helps the bacteria endure harsh conditions). Some species such as Clostridium botulinum, Clostridium perfringens, and Clostridium difficile are pathogenic and are associated with a range of medical conditions.

Tuberculosis, a severe lung disease affecting millions worldwide, is caused by the rod-shaped bacterium Mycobacterium tuberculosis. These bacteria have a characteristic thick, waxy cell wall that helps them survive in harsh conditions and resist antibiotics.

Role and Impact of Rod Shaped Bacteria in Everyday Life

The role and impact of rod shaped bacteria in everyday life is vast - contributing to health, food production, disease, ecology, and countless other areas. While their role in disease often dominates discussions, it should not eclipse their beneficial roles.

E. coli: They are a vital part of a healthy human intestinal tract and play a crucial role in breaking down food, making vitamins, and battling harmful organisms.
Lactobacillus: These are key players in fermentation - a process that not only produces a variety of delicious foods and drinks but also creates foods with increased shelf life and nutritional value. Lactobacillus species are also important for gut health.
Salmonella: Understanding and studying these bacteria help in the control of foodborne illnesses and are thus vital for public health initiatives.
Clostridium: This genus includes species that cause medical issues, but also species that produce useful substances such as ethanol and acetone.
Mycobacterium tuberculosis: Studying this bacterium not only helps in the fight against tuberculosis but also offers insight into bacterial adaptation, survival mechanisms, and resistance to antibiotics.

In essence, no conversation about global health, human physiology, environmental science, or even food and agriculture can be comprehensive without acknowledging the incredible impact made by these ubiquitous, rod-shaped wonders. Next time you enjoy a piece of cheese or recover from an illness, bear in mind that a microscopic rod-shaped bacterium somewhere played a part in it.

Deeper Insights into Rod Shaped Bacteria

Delve more deeply into the world of rod shaped bacteria and you'll find a rich landscape teeming with diverse behaviours, shapes and roles. Each bacterium draws strength from its structure to fulfil its vital functions, be it breaking down nutrients or causing disease.

Significant Research Findings on Rod Shaped Bacteria

Research in the field of microbiology has brought different aspects of rod shaped bacteria to light. By unravelling these symbiotic prokaryotes, researchers have broadened academic knowledge and understanding, thus leading to remarkable innovations and potential solutions in the realms of medicine, ecology and industry.

One such discovery involves the shape determination in bacteria. Bacterial shapes vary from spheres to spirals to rods, with the latter being extremely common. The shape, in turn, is largely dictated by the peptidoglycan cell wall structure. Recent research has highlighted the role of actin-like proteins in maintaining the rod shape of bacteria like E. coli and B. subtilis. These proteins, MreB, coil the interior of the rod-shaped bacteria, driving the localised insertion and remodelling of the peptidoglycan network to maintain the rod shape.

Another significant finding involves the Swim strategy of rod-shaped bacteria. A well-known example is E. coli’s movement which is run-and-tumble. In the run phase, they move in a straight line, and in the tumble phase, they move chaotically to change direction. This pattern of locomotion has been understood as an effective strategy to search for nutrient-rich areas optimally.

Another important research contribution is the understanding of biofilm formation - the ability of bacteria to aggregate and form complex, surface-attached communities. Rod-shaped bacteria like Pseudomonas aeruginosa are extensively studied for their biofilm formation, which provides them with protection and survival advantages, and causes difficulties for antibiotic treatment and removal procedures.

Scientific studies have also thrown light on the interaction between rod-shaped bacteria and the immune system. For instance, research demonstrates how Mycobacterium tuberculosis, the rod-shaped bacterium causing tuberculosis, can manipulate the host immune response, thus evading destruction. Understanding these mechanisms can be critical for developing more effective treatments for infections.

Role of Rod Shaped Bacteria in Microbiology

Rod shaped bacteria hold a critical role in the broader field of microbiology, showcasing not only the diversity of life at the smallest scale but also providing insights into important biological processes and interactions, and even guiding the search for solutions to global challenges.

In Health and Disease: This is an area where the role of rod shaped bacteria is most apparent. As mentioned above, a wide range of pathogens are rod shaped, such as E. coli, Salmonella, and Mycobacterium tuberculosis. These bacteria are the focus of extensive research in medical microbiology, aiming to understand their virulence factors, transmission routes, impact on the human body and possible preventive and therapeutic approaches. At the same time, not all rod-shaped bacteria are harmful — many are part of the normal gut flora, such as Bacteroides species, contributing to healthy digestion and nutrition.

In Applied Microbiology: Rod shaped bacteria are also crucial players in fields such as biotechnology, food production and waste management. In the food industry, rod-shaped Lactobacillus species are essential in the production of yogurt and other fermented foods. In the field of biotechnology, bacteria like E. coli are often used as model organisms and vectors for cloning, genetics and synthetic biology research.

In Environmental Microbiology: Rod shaped bacteria also play indispensable roles in different habitats and ecological processes. In soil, root-associated bacteria such as Nitrosomonas, a rod-shaped bacterium, help in the nitrogen cycle by converting ammonia to nitrites, a crucial step in the soil nitrogen cycle.

As microbiologists continue to explore the fascinating world of these agile, adaptable organisms, it’s certain that they will uncover even more of their amazing capabilities, revealing new ways that rod shaped bacteria shape our world, our health, and our future.

Rod Shaped Bacteria - Key takeaways

  • A common type of bacteria is known as rod-shaped bacteria or bacilli, noted for their unique ability to form endospores, adaptability to changing environments and important role across multiple biological aspects.
  • The 'Gram Stain' technique is used to classify bacteria into Gram-Positive and Gram-Negative groups. Gram-Positive bacteria retain crystal violet dye due to a thick peptidoglycan wall and appear violet/blue, while Gram-Negative ones have a thinner peptidoglycan wall and an extra outer lipid membrane, appearing red/pink under a microscope.
  • Mycobacterium tuberculosis, a rod-shaped bacterium is responsible for tuberculosis, while Bacillus anthracis, another rod-shaped bacterium, is responsible for anthrax. Rod-shaped bacteria can have various anatomical features such as cell wall, cell membrane, cytoplasm, nucleoid, plasmids, and ribosomes and are associated with a wide range of diseases.
  • Rod-shaped bacteria play a major role in disease transmission and are often spread via contaminated food, water, or contact with infected individuals or animals. Some examples include E.coli and Salmonella.
  • Antibiotic treatment is generally effective for bacterial infections. However, misuse or overuse of antibiotics can lead to the emergence of resistant bacterial strains. Therefore, the full course of antibiotics must always be completed, irrespective of early symptom resolution.

Frequently Asked Questions about Rod Shaped Bacteria

Rod-shaped bacteria, also known as bacilli, include species like Escherichia coli, Bacillus subtilis, and Pseudomonas aeruginosa. Mycobacterium tuberculosis, which causes tuberculosis, and Salmonella enterica, which can cause food poisoning, are also rod-shaped.

Yes, E. Coli, or Escherichia coli, is a type of bacteria that is rod-shaped. It's a part of the family Enterobacteriaceae which are all rod-shaped bacteria.

The term that means rod-shaped bacteria is 'Bacillus'.

The rod shape provides bacteria with a higher surface area-to-volume ratio, maximising their nutrient uptake efficiency. Additionally, the shape can provide an advantage in mobility in viscous environments and makes division and reproduction easier for bacteria.

No, all bacteria are not rod-shaped. Bacteria come in various shapes including cocci (sphere-shaped), bacilli (rod-shaped), and spirilli (spiral-shaped), among others. Their shapes vary depending on their genetic makeup and environment.

Final Rod Shaped Bacteria Quiz

Rod Shaped Bacteria Quiz - Teste dein Wissen

Question

What is a basic definition of rod shaped bacteria?

Show answer

Answer

Rod shaped bacteria are bacteria that have a rod-like structure. They fall under the category of bacilli and have the ability to form spores, helping them survive in harsh environments.

Show question

Question

What are some common arrangements of rod shaped bacteria?

Show answer

Answer

Some common arrangements of rod shaped bacteria are diplobacilli (pairs of bacilli), streptobacilli (chains of bacilli), palisades (bacilli arranged side by side), and coccobacilli (short and plump bacilli).

Show question

Question

What's one point of confusion regarding the classification of rod shaped bacteria?

Show answer

Answer

A common point of confusion is that not every rod-shaped bacterium belongs to the Bacillus genus, and not every spore-forming bacterium is a Bacillus.

Show question

Question

What is the Gram Stain technique in microbiology?

Show answer

Answer

The Gram Stain technique is a method that divides bacteria into two groups, Gram-Positive and Gram-Negative, based on whether they retain the crystal violet dye used in the staining due to the thickness of their peptidoglycan wall.

Show question

Question

What distinctive features do Gram-Negative rod-shaped bacteria have?

Show answer

Answer

Gram-Negative rod-shaped bacteria have a complex cell wall structure with a thin peptidoglycan layer and an additional outer membrane composed of lipopolysaccharides. They are particularly resistant to antibacterial treatments and their outer membrane is selectively permeable.

Show question

Question

What are some of the anatomical features of rod shaped bacteria?

Show answer

Answer

Rod shaped bacteria have several anatomical features such as a cell wall, cell membrane, cytoplasm, nucleoid, plasmids, and ribosomes. Some have additional features such as flagella and pili which enable motility and genetic material transfer, respectively.

Show question

Question

What diseases are commonly caused by rod-shaped bacteria?

Show answer

Answer

Some diseases caused by rod-shaped bacteria include Anthrax, Escherichia Coli Infections, Salmonellosis, Legionnaire's Disease, and Tuberculosis.

Show question

Question

How are rod-shaped bacteria like E.Coli and Salmonella typically spread?

Show answer

Answer

E.Coli and Salmonella are usually spread through the 'faecal-oral route', meaning they can be transmitted through contaminated food or water and from person to person.

Show question

Question

How are diseases caused by rod-shaped bacteria generally treated?

Show answer

Answer

The treatment of bacterial infections, regardless of the bacteria's shape, typically involves the use of antibiotics. These work by damaging essential bacterial cell functions. Supportive care, like hydration and pain management, is also crucial.

Show question

Question

Which rod-shaped bacterium is essential for many fermentation processes and plays a crucial role in the production of various foods?

Show answer

Answer

Lactobacillus is essential for many fermentation processes and plays a crucial role in the production of foods like yogurt, cheese, pickles, beer, wine, cider, kimchi, chocolate, and other fermented foods.

Show question

Question

What is one of the real-world examples of rod-shaped bacteria, and what is its role?

Show answer

Answer

E. coli is an example of rod-shaped bacteria, and they are a vital part of a healthy human intestinal tract, playing a crucial role in breaking down food, making vitamins, and battling harmful organisms.

Show question

Question

What does Mycobacterium tuberculosis cause and what are its characteristics?

Show answer

Answer

Mycobacterium tuberculosis causes Tuberculosis, a severe lung disease. These bacteria have a characteristic thick, waxy cell wall that helps them survive in harsh conditions and resist antibiotics.

Show question

Question

What role do the proteins MreB play in rod-shaped bacteria?

Show answer

Answer

MreB proteins coil the interior of rod-shaped bacteria, driving the insertion and remodelling of the peptidoglycan network to maintain the rod shape.

Show question

Question

What is the significance of 'biofilm formation' by rod-shaped bacteria?

Show answer

Answer

Biofilm formation allows bacteria to form complex, surface-attached communities, providing them with protection and survival advantages, and causing difficulties for antibiotic treatment and removal procedures.

Show question

Question

How does Mycobacterium tuberculosis, a rod-shaped bacterium, interact with the immune system?

Show answer

Answer

Mycobacterium tuberculosis manipulates the host immune response, thereby evading destruction, which is critical for effective treatments for infections.

Show question

Test your knowledge with multiple choice flashcards

What is a basic definition of rod shaped bacteria?

What are some common arrangements of rod shaped bacteria?

What's one point of confusion regarding the classification of rod shaped bacteria?

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Flashcards in Rod Shaped Bacteria15

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What is a basic definition of rod shaped bacteria?

Rod shaped bacteria are bacteria that have a rod-like structure. They fall under the category of bacilli and have the ability to form spores, helping them survive in harsh environments.

What are some common arrangements of rod shaped bacteria?

Some common arrangements of rod shaped bacteria are diplobacilli (pairs of bacilli), streptobacilli (chains of bacilli), palisades (bacilli arranged side by side), and coccobacilli (short and plump bacilli).

What's one point of confusion regarding the classification of rod shaped bacteria?

A common point of confusion is that not every rod-shaped bacterium belongs to the Bacillus genus, and not every spore-forming bacterium is a Bacillus.

What is the Gram Stain technique in microbiology?

The Gram Stain technique is a method that divides bacteria into two groups, Gram-Positive and Gram-Negative, based on whether they retain the crystal violet dye used in the staining due to the thickness of their peptidoglycan wall.

What distinctive features do Gram-Negative rod-shaped bacteria have?

Gram-Negative rod-shaped bacteria have a complex cell wall structure with a thin peptidoglycan layer and an additional outer membrane composed of lipopolysaccharides. They are particularly resistant to antibacterial treatments and their outer membrane is selectively permeable.

What are some of the anatomical features of rod shaped bacteria?

Rod shaped bacteria have several anatomical features such as a cell wall, cell membrane, cytoplasm, nucleoid, plasmids, and ribosomes. Some have additional features such as flagella and pili which enable motility and genetic material transfer, respectively.

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