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B cells are activated in the immune response when they encounter a specific antigen that matches their receptors. This triggers the B cells to multiply and differentiate into plasma cells, which produce antibodies to target and neutralize the antigen.

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What area is antigen challenge and clonal selection most likely to occur?

Antigen challenge and clonal selection are most likely to occur in the secondary lymphoid organs, such as the lymph nodes and spleen. These organs are where antigens encounter immune cells, triggering an immune response and the selection of specific immune cell clones.


When does Phagocytosis occur?

When Pathogen-associated molecular patterns, or PAMPS as they are referred to, attach themselves to immune cells within the body of a mammal Phagocytosis is activated in these immune cells. This then leads to the activation of NF-kB.


Clumping of blood cells from an immune response?

Clumping of blood cells, known as agglutination, can occur due to immune responses such as the production of antibodies against antigens present on the surface of the blood cells. This can happen in conditions like transfusion reactions or autoimmune disorders where the immune system mistakenly targets the body's own blood cells. Agglutination can lead to blockage of blood vessels and impaired circulation, potentially resulting in organ damage or other serious consequences.


What is anergy?

Anergy is a state of T-cell unresponsiveness where the immune system is unable to mount a response to specific antigens. This can occur to prevent autoimmune reactions or due to T-cell exhaustion. Anergy is characterized by the lack of T-cell activation and proliferation in response to antigen stimulation.


What are the key differences between negative selection and positive selection in the context of immune responses?

Negative selection and positive selection are two processes that occur in the immune system to ensure the proper functioning of immune cells. Negative selection eliminates self-reactive immune cells that could potentially attack the body's own tissues, while positive selection promotes the survival and maturation of immune cells that can effectively recognize and respond to foreign pathogens. In essence, negative selection removes harmful immune cells, while positive selection enhances the development of beneficial immune cells.

Related Questions

Which immune response would not occur when staphylococcus aureus enters the bloodstream?

The specific immune response that may not occur when Staphylococcus aureus enters the bloodstream is the activation of the complement system. This response involves a series of proteins that help to eliminate invading microorganisms, but certain strains of Staphylococcus aureus possess proteins that can inhibit or evade complement activation, allowing the bacterium to evade immune detection and destruction.


What important part of the immune response is delayed and takes at least a few days to occur while many other elements of the immune response occur immediately?

production of antibodies


Where does the activation of proteinase inhibitor genes occur?

The activation of proteinase inhibitor genes typically occurs in response to stress or injury, such as pathogen invasion or insect feeding. This activation is part of a plant's defense mechanism to protect itself from damage by inhibiting the activity of proteinases released by the attacker.


What area is antigen challenge and clonal selection most likely to occur?

Antigen challenge and clonal selection are most likely to occur in the secondary lymphoid organs, such as the lymph nodes and spleen. These organs are where antigens encounter immune cells, triggering an immune response and the selection of specific immune cell clones.


What are the action of b cells and t cells in an immune response?

There are three types of T cells: * Th cells: T helper cells which bind to foreign antigens on an antigen presenting cell (APC) and secrete cytokines, hereby initiating an immune system response. * Tc cells: T cytotoxic cells, which bind to the infected cell and secretes the cytotoxins perforin and granulysin and thus lysing the cell, killing it. * Ts cells: T suppressor cells, which shutdown the immunity system after the infection has been eliminated from the body. B cells, upon detecting the presence of cytokines, divide and differentiate into two types of cells: * Plasma cells; which secrete antibodies * Memory cells; which persist in the body in case there is a recurrent infection with the same disease, then a faster and more efficient immune response would occur.


When does Phagocytosis occur?

When Pathogen-associated molecular patterns, or PAMPS as they are referred to, attach themselves to immune cells within the body of a mammal Phagocytosis is activated in these immune cells. This then leads to the activation of NF-kB.


Inflammatory reactions usually occur in what tissue?

Inflammatory reactions generally occur in tissues in response to injury or infection, where they help to remove harmful stimuli and initiate the healing process by recruiting immune cells to the affected site. This response is characterized by redness, swelling, warmth, and pain in the affected area.


Clumping of blood cells from an immune response?

Clumping of blood cells, known as agglutination, can occur due to immune responses such as the production of antibodies against antigens present on the surface of the blood cells. This can happen in conditions like transfusion reactions or autoimmune disorders where the immune system mistakenly targets the body's own blood cells. Agglutination can lead to blockage of blood vessels and impaired circulation, potentially resulting in organ damage or other serious consequences.


What is anergy?

Anergy is a state of T-cell unresponsiveness where the immune system is unable to mount a response to specific antigens. This can occur to prevent autoimmune reactions or due to T-cell exhaustion. Anergy is characterized by the lack of T-cell activation and proliferation in response to antigen stimulation.


What levels of organization are required for this response to occur?

cells, organ systems, and organism


How does your body know which cells to attack?

1. Your immune system can recognize cells based on the proteins present on the surface of cells. Viruses, bacteria, and other foreign cells are recognized as being different from your own cells and are attacked by your immune system.


Does meiosis occur when the immune system produces B and T cells?

B and T cells are both types of white blood cells. When the immune system produces them it is actually mitosis that occurs rather than meiosis. The are produced within the bone marrow.