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Any of the antibody-secreting cells found in lymphoid tissue and derived from B cells upon lymphokine stimulation and reaction with a specific antigen. Also called plasmacyte.
Plasma cells, also called plasma B cells, plasmocytes, and effector B cells, are white blood cells which produce large volumes of antibodies. They are transported by the blood plasma and the lymphatic system. Like all blood cells, plasma cells ultimately originate in the bone marrow; however, these cells leave the bone marrow as B cells, before terminal differentiation into plasma cells, normally in lymph nodes. They are an important part of the immune system. Once produced, B cells mainly stay within the bone marrow and wait until an antigen appears in the body. The antigens bind to the B cell and stimulate it to form plasma cells. The plasma cell then produces antibodies to destroy the pathogen. Plasma cells are just one method the body uses to fight diseases. Each plasma cell produces a particular antibody to neutralize a particular antigen. When an antigen enters the body, they must first bind to a B cell which then proliferates to form plasma cells. The plasma cells then secrete antibodies that inactivate the pathogen and mark it for destruction. Normally, a plasma cell will produce antibodies for four to five days and will then die.
B - cell upon activation differentiate either in memory cell or plasma cell. plasma cell produce antibody at very high rate while memory cell function as memmory. during next infection it will get activate
B-cells can turn into plasma cells.