region-specific antisera to three enkephalins : met-enkephalin , met-enkephalin-arg6-phe7 and met-enkephalin-arg6-gly7-leu8 , together with four region specific antisera to progastrin : c-terminal g17 specific , n-terminal g34 specific , cryptic peptides a- and b-specific , were used in immunohistochemical studies of hog antral mucosa .
C0014298
enkephalins
C0014295
met-enkephalin