1·The reason is the lack of gonadotropin.
原因是促性腺激素缺乏。
2·Objective To discuss the comparability of human chorionic gonadotropin results among different detection system.
目的：探讨不同检测系统测定人绒毛膜促性腺激素结果的可比性。
3·Objective to examine the effects of mifepristone on gonadotropin secretion at anterior pituitary by the model of early pregnant rhesus monkeys.
目的利用早孕猕猴模型，了解米非司酮对腺垂体促性腺激素分泌的影响。
4·Objective To discuss the comparability of human chorionic gonadotropin (HCG) results among different detection system.
目的：探讨不同检测系统测定人绒毛膜促性腺激素(HCG)结果的可比性。
5·Objective\ To investigate the effects of sialoadenectomy and human chorion gonadotropin(HCG) administration on spermateleosis in mouse.
目的探讨切除颌下腺及术后给予人绒毛膜促性腺激素（HCG）对小鼠精原细胞增殖的影响。