B cells.. The formation of antibodies in the blood and lymph is widespread and the control of bacteria entering the body



The receptor on cell B is called the antibody of the membrane. When cell B encounters a bacterial cell or a toxin that carries a specific antigen, the antibody expands to cell B, as it is divided and many plasma cells are a mature B cell that has the ability to form antibodies in blood and lymph on a large scale. There is a theory called cell selection theory which states that the antigen selects or selects any of the B cells that will be the colony of the plasma cells. It is observed that cell B does not divide into plasma cells only after the presence of its antigen, and that cell B distinguishes its antigen directly without helping the rest of the cells divide to form plasma cells.
When in B cells, they form plasma cells as well as memory B cells. When the antigen is under control, the number of plasma cells will be reduced, while memory B cells remain in the bloodstream. Memory B is the means by which active immunity is performed. Since the same antigen enters the body again, the B cells of memory are quickly divided into new plasma cells. These plasma cells form antibodies. The defense of the body by cells B is called antibody-induced immunity, because different types of B cells form antibodies, also called humoral immunity, because these antibodies are present in the bloodstream.
B-lymphocytes function in the control of bacteria entering the body. As foreign bodies enter the body, it stimulates B-cells to form a line of clonal expansion cells if stimulated by T-lymphocytes. During this process, some plasma cells produce antibodies against the antigen that enters the body.