Abstract
Summary
The administration over various periods of time of a known total dose of an extract of equine gonadotropic hormone to immature rats gave results different from those obtained with either sheep anterior lobe or chorionic gonadotropic hormones. Ovaries of about the same weight were obtained whether the injections were carried out for 5, 10, or 15 days, but as the period of injection was prolonged there was a progressive increase in uterine weight.
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