title: An immunocytochemical and ultrastructural study of the larval anterior intestine of the frog Rana temporaria, with especial reference to endocrine cells.
abstract: Endocrine cells of the larval intestine of Rana temporaria tadpoles have been identified by argyrophilic, immunocytochemical and electron-microscopical techniques. Scarce endocrine cells have been found in both the short non-absorptive zone immediately following the stomach, and in the rest of the anterior intestine. Endocrine cells are frequently seen to extend a cytoplasmic process towards the lumen. Immunoreactivity for serotonin, somatostatin, bombesin and cholecystokinin-8 has been detected. According to the ultrastructural traits of the endocrine granules, three larval intestinal endocrine populations have been differentiated.
authors.forename: M E
authors.initials: ME
authors.lastname: Bodegas
authors.forename: A C
authors.initials: AC
authors.lastname: Villaro
authors.forename: M A
authors.initials: MA
authors.lastname: Burrell
authors.forename: J
authors.initials: J
authors.lastname: Rovira
authors.forename: E
authors.initials: E
authors.lastname: Valverde
authors.forename: A
authors.initials: A
authors.lastname: Ortiz De Zárate
authors.forename: P
authors.initials: P
authors.lastname: Sesma