44. Which factor can be detected in the urine during the early pregnancy of mammals?
(A) progesterone
(B) estrogen
(C) luteinizing hormone
(D) chorionic gonadotropin
(E) follicle-stimulating hormone
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統計: A(0), B(0), C(0), D(1), E(0) #3367685
統計: A(0), B(0), C(0), D(1), E(0) #3367685