the larger molecular weight peptides produced more prolonged inhibition of bladder activity than the smaller molecular weight ones , with the rank order of activity being similar at spinal and supraspinal sites : peptide f greater than or equal to peptide e = bam 22p greater than bam 12p greater than met5-enkephalin-arg6 , phe7 , leu8 = met5-enkephalin-arg6 , phe7 greater than or equal to met-enkephalin = leu-enkephalin .
C0014298
enkephalin
C0014294
leu-enkephalin