[ 3h ] ( 3-methyl-his2 ) thyrotropin releasing hormone ( [ 3h ] metrh ) binds to sites in the sheep central nervous system ( cns ) whose properties closely resemble both those of cns binding sites for [ 3h ] trh and those of pituitary binding sites for [ 3h ] metrh .
C0040162
thyrotropin releasing hormone
C0032002
pituitary