42.______is the most abundant protein found in mammals.
(A) Casein
(B) Collagen
(C) Ovoglobulin
(D) Ovalbumin
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統計: A(0), B(0), C(0), D(1), E(0) #2753516
統計: A(0), B(0), C(0), D(1), E(0) #2753516