estrogen implanted directly into the medial preoptic region of pregnant charles river sprague-dawley rats hysterectomized and ovariectomized on day 16 of gestation mimics the effects of systemic estrogen treatment at this time by reducing the latency to respond to foster pups with maternal behavior ( numan , rosenblatt , and komisaruk , 1977 ) .
C0032961
gestation
C0014939
estrogen