hplc resolution of the fraction containing the low molecular weight ec peptides showed that free enkephalins as well as [ met ] enkephalin-arg6-phe7 and [ met ] enkephalin-arg6-gly7-leu8 accumulated while [ met ] enkephalin-arg6 and [ met ] enkephalin-lys6 disappeared .
C0014298
enkephalins
C0014295
met ] enkephalin