subsequently , an episodic pattern of activity in the pituitary-leydig cell axis of these animals was restored by a chronic and unchanging intermittent iv infusion of gnrh ( 0.1 microgram/min for 3 min ever 3 h ) , which appears to provide the gonadotropes of lesioned animals with a hypophysiotropic drive comparable to that produced by the hypothalamus of animals with an intact central nervous system .
C0023610
gnrh
C0020663
hypothalamus