19 下列何者存在於皮膚,被稱為 provitamin D?
(A)Testosterone
(B)7-Dehydrocholesterol
(C)7-Oxycholesterol
(D)Ergosterol
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統計: A(2), B(346), C(14), D(6), E(0) #572802
統計: A(2), B(346), C(14), D(6), E(0) #572802