50.下列何者會出現在母狗假懷孕(pseudopregnancy)時?
(A)助孕酮(progesterone)濃度增加
(B)催乳激素(prolactin)濃度降低
(C)子宮內膜囊腫增生(cystic endometrial hyperplasia)
(D)黃體(corpus luteum)萎縮
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統計: A(148), B(8), C(108), D(9), E(0) #1147832
統計: A(148), B(8), C(108), D(9), E(0) #1147832