49.下列何者是參與引發睪丸下降至陰囊(testis descent)的重要因子,而此與精子生成能力密切相關?
(A)激活素(activin)
(B)雄性素(androgen)
(C)沃氏管退化因子(Wolffian duct regression factor)
(D)血管內皮生長因子(vascular endothelial growth factor)
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統計: A(37), B(706), C(147), D(4), E(0) #2867027
統計: A(37), B(706), C(147), D(4), E(0) #2867027