23. 'T cells recognize antigen when the antigen
(A) is internalized by T celis via phagocytosis and subsequently binds to T-cell receptors in the
endoplasmic reticulum.
(B) forms a complex with membrane-bound MHC molecules on another host-derived cell
(C) is presented on the surface of a B cell on membrane-bound immunoglobulins
(D) forms a complex with membrane-bound MHC molecules on the T cell
(E) bears epitopes derived from proteins, carbohydrates, and lipids
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