B cells
produce an antibody specific to the antigen when they encounter an antigen
B cells are a type of white blood cell that play a crucial role in the adaptive immune system. They are produced in the bone marrow and can differentiate into plasma cells, which produce antibodies that target specific pathogens. B cells also have memory, which means that they can remember previous infections and quickly produce antibodies in response to them.
B cells are activated when they come into contact with a specific antigen (a molecule on the surface of a pathogen). This interaction stimulates the B cell to divide and differentiate into plasma cells, which secrete antibodies. The antibodies produced by B cells bind to the antigen and help to neutralize or eliminate the pathogen.
B cells also play a role in the immune system’s regulation and prevention of autoimmune diseases. They can recognize self-antigens and prevent the immune system from attacking the body’s own tissues through a process called immune tolerance. Dysfunction of B cells can lead to autoimmune diseases where the immune system attacks healthy cells in the body, such as in lupus, rheumatoid arthritis, and multiple sclerosis.
Overall, B cells are essential components of the adaptive immune system and play a crucial role in defending our bodies against infections and diseases.
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