the stimulatory effect on plasma prl in sham and intact rats by one iv bolus injection of the serotonin precursor 5-hydroxy-l-tryptophan ( 5-htp ; 10 mg/kg bw ) was completely abolished in pvl animals ( basal to peak : pvl , 3.7 +/- 0.6 to 5.2 +/- 1.4 ;
C0041249
tryptophan
C0000578
5-htp