this elevation in hypophyseal responsiveness observed in vitro followed a cyclic pattern which could be superimposed on the normal cyclic changes in pituitary responsiveness , whereas the cyclic increase in pituitary lh responsiveness to lh-rf in vivo following acute ovariectomy was first detectable 16 to 18 h earlier than in intact controls , that is , on late diestrus day 2 rather than on the morning of proestrus .
C0032005
hypophyseal
C0032002
pituitary