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T lymphocyte

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{n: B cell, B lymphocyte} a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens



{n: T cell, T lymphocyte} a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells

{n: hybridoma} a hybrid cell resulting from the fusion of a lymphocyte and a tumor cell; used to culture a specific monoclonal antibody

{n: lymphocyte, lymph cell} an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection

{n: plasma cell, plasmacyte} a cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood


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