56. Humans can smell many different kinds of odorant molecules via receptors on the olfactory neurons. These receptors belong to a class of recq)tors that can induce cAMP production to mediate the downstream responses. These odorant recqjtors are:
(A) EGF receptor
(B) TGF beta receptor
(C) G-protein-coupled receptor
(D) Tjrosine kinase receptor
(E) AH of the above

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統計： A(1), B(0), C(40), D(1), E(0) #3223074