the initial approach was to compare hypothalamic gnrh content between lambs on a restricted diet with low lh pulse frequency ( less than 1 pulse/4 h ; n = 5 ) and lambs on an ad libitum diet with high lh pulse frequency ( 4.5 +/- 0.4 pulses/4 h ; n = 5 ) .
C0020663
hypothalamic
C0023610
gnrh