title: Immunocytochemical demonstration of thehypothalamo-hypophysial vasotocinergic system of Lampetra fluviatilis.
abstract: With the use of the unlabeled antibody peroxidase-antiperoxidase (PAP) technique at the light microscopic level, it was shown that the preoptico-hypophysial neurosecretory system of the adult migrating Lampetra fluviatilis is a vasotocinergic system. It does not synthesize vasopressin. The results are entirely consistent with earlier chromatographic and pharmacological indications thatit produces little or no oxytocin-like peptide hormone. In the adenohypophysis, immunoreactive neurohypophysial peptidergic fibres are absent.
mesh_terms: D000818:Animals; D005260:Female; D005399:Fishes / Q000033:anatomy & histology*; D007030:Hypothalamo-Hypophyseal System / Q000032:analysis*; D007124:Immunoenzyme Techniques; D007798:Lampreys / Q000033:anatomy & histology*; D008297:Male; D010902:Pituitary Gland / Q000032:analysis; D011301:Preoptic Area / Q000032:analysis; D014668:Vasotocin / Q000502:physiology*
chemical_list: D014668:Vasotocin