Abstract
Summary
A sensitive biologic test for monkey chorionic gonadotrophin (MCG) has been developed based upon the augmentation of MCG either by human eunuch gonadotrophin or human postmenopausal gonadotrophin, using uterine weight of immature rats as the end point. With this method MCG was detected as early as 12 days postmating. The duration of MCG excretion in urine was from day 12 to day 38. The amount excreted reached a maximum between days 18 and 28. The maximum levels were between 205 IU and 288 IU of HCG per 24 hours.
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