BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cytotoxic killer T cells
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helper T cells
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B cells
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natural killer cells
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Detailed explanation-1: -The cells of the adaptive immune system include: antigen-specific T cells, which are activated to proliferate through the action of APCs, and B cells which differentiate into plasma cells to produce antibodies.
Detailed explanation-2: -Each B cell produces a single species of antibody, each with a unique antigen-binding site. When a naïve or memory B cell is activated by antigen (with the aid of a helper T cell), it proliferates and differentiates into an antibody-secreting effector cell.
Detailed explanation-3: -B cells secrete antibodies that contribute to tissue injury via multiple mechanisms. In addition, B cells contribute to disease pathogenesis in autoimmunity and alloimmunity by presenting antigens as well as providing costimulation and cytokines to T cells.