for determination of the roles of histamine and its receptors , h1 and h2 , in the control of basal and estrogen-induced lh-rh secretion , the mediobasal hypothalamus ( mbh ) and/or pituitary was excised from normally cycling female rats and perifused in an in vitro sequential double chamber perifusion system .
C0023610
lh-rh
C0020663
hypothalamus