these observations in the fetus and in anencephalic infants suggest that the striking elevation of serum prl in the fetus is neither mediated by a putative prl releasing factor or by trf , nor is a consequence of suppression or absence of prl release inhibiting factor alone , as a functional hypothalamus is not required to attain the high prl concentration at term .
C0023610
prl releasing factor
C0020663
hypothalamus