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Originates in bone marrow from stem cell

B and T cells

Give rise to plasma cells

B cells

Include suppressor, helper and cytotoxic cells

T cells

Form memory cells

B and T cells

Directly attacks foreign cells using chemicals

T celss

Progeny (daughter cells) produces antibodies

B cells

Bears a cell surface receptor capable of recognizing a specific antigen

B and T cells

Forms clones of identical cells when activated

B and T cells

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