neuronal pathways immunoreactive to antisera against the extended-enkephalins , met-enkephalin-arg6-phe7 ( met-7 ) and met-enkephalin-arg6-gly7-leu8 ( met-8 ) , have been identified in the brain of the blowfly calliphora vomitoria .
C0014298
enkephalins
C0014295
met-enkephalin