Since each kind of B cell carries its own particular antibody molecule in its cell membrane, activation can only occur in the presence of a(n):

corresponding antigen
immunosuppressive drug
CD3 receptor complex
cytotoxic T cell
None of the choices are correct


corresponding antigen

Anatomy & Physiology

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a. is a means by which gradation of muscle contraction may be accomplished. b. results from increasing the number of motor units that are firing within a muscle. c. results from increasing the frequency at which motor units are firing within a muscle. d. both (a) and (b) above. e. both (a) and (c) above.

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Answer the following statement true (T) or false (F)

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