pregnant mare serum gonadotropin and human chorionic gonadotropin , hormones that can be used to induce superovulation , were administered to hybrid female mice ( c57bl/6j x cba/j ) on known days of the estrous cycle , or when the mice were known to be acyclic , in order to determine whether certain reproductive states of the animals either enhanced or inhibited effects of the exogenous gonadotropins .
C0018062
human chorionic gonadotropin
C0018061
gonadotropins