title: Immunoreactive methionine-enkephalin in the caudal neurosecretory system of the carp, Cyprinus carpio.
abstract: Methionine-enkephalin (Met-enk) was detected by immunocytochemistry and radioimmunoassay in the caudal neuro-secretory system of the carp Cyprinus carpio. Some cells showing urotensin I (UI)-immunoreactivity reacted to Met-enk antiserum, but others did not. Neurons with urotensin II (UII)-immunoreactivity did not react to Met-enk antiserum; neurons with both UI and UII immunoreactivities also displayed a negative Met-enk reaction. Met-enk was detected by radioimmunoassay in the urophysis, although the content was relatively small compared with that found in other parts of the central nervous system and in the pituitary.
authors.affiliation: Department of Biology, Faculty of Science, Toho University, Funabashi, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Yamada
authors.forename: S
authors.initials: S
authors.lastname: Mikami
authors.forename: Y
authors.initials: Y
authors.lastname: Kuraishi
authors.forename: H
authors.initials: H
authors.lastname: Kobayashi
mesh_terms: D000818:Animals; D002347:Carps / Q000378:metabolism*; D003530:Cyprinidae / Q000378:metabolism*; D004744:Enkephalin, Methionine / Q000032:analysis*; D007150:Immunohistochemistry; D009490:Neurosecretory Systems / Q000032:analysis*; D014579:Urotensins / Q000032:analysis
chemical_list: D014579:Urotensins; D004744:Enkephalin, Methionine; C029676:urotensin I; C029677:urotensin II