![]() Klein C, van Noorden S (1978) Use of immunocytochemical staining of somatostatin for correlative light and electron microscopic investigation of D cells in the pancreatic islet of Xiphophorus helleri H. Springer, Berlin Heidelberg New York, pp 1–70 In: Dörzbach E (ed) Handbook of experimental pharmacology. Kern HF (1971) Vergleichende Morphologie der Langerhans'schen Inseln der Wirbeltiere. ![]() Kern H (1964) Untersuchungen über das Pankreas einiger Selachier mit besonderer Berücksichtigung des Inselorgans. Johnson DE, Torrence JL, Elde RP, Bauer GE, Noe BD, Fletscher DJ (1976) Immunohistochemical localization of somatostatin, insulin and glucagon in the principal islets of the anglerfish ( Lophius americanus) and the channel catfish ( Ictalurus punctata). Jackson S (1922) The islands of Langerhans in elasmobranch and teleostean fishes. Hellman B, Hellerström C (1960) The islets of Langerhans in ducks and chickens with special reference to the argyrophil reaction. In: Fujita T (ed) Endocrine gut and pancreas. Grube D (1976) Biogenic monoamines in the GEP endocrine system of various mammals. Z Zellforsch 57:487–494įujita T (ed) (1976) Endocrine gut and pancreas. Pergamon Press, Oxford, pp 3–10įujita T (1962) Über das Inselsystem des Pankreas von Chimaera monstrosa. In: Brolin SE, Hellman B, Knutson H (eds) The structure and metabolism of the pancreatic islets. Arch Histol Jpn 31:99–117įerner H, Kern H (1964) The islet organ of selachians. A histological and immunocytochemical study, combined with quantitative radioimmunological assays of tissue extracts. Int Mschr Anat Physiol 16:155–205įalkmer S, Eide RP, Hellerström C, Petersson B, Efendić S, Fohlman J, Siljevall JB (1977) Some phylogenetical aspects on the occurrence of somatostatin in the gastro-entero-pancreatic endocrine system. Elsevier, Amsterdam, pp 61–71ĭiamare V (1899) Studii comparativi sulle isole di Langerhans del pancreas. Cell Tissue Res 171:317–329Ĭavallero C, Spagnoli LG, Villashi S (1976) An electron microscopic study of human pancreatic islets. Eisevier, Amsterdam, pp 13–24īrinn JE, Epple A (1976) New types of islet cells in a cyclostome Petromyzon marinus L. B-cells (type I) and the cell types II to IV were the most frequent cells types V to VII occurred occasionally, whereas type VIII-cells were very rare.īöck P, Gorgas K (1976) Enterochromaffin cells and enterochromaffin-like cells in the cat pancreas. Grimelius-positive secretory granules were not only found in cell types II and III, but also in types V, VI, and VII. Type VIII-cells have small granules curved in shape and show moderate electron density (Ø100 nm). Type VII-cells possess two kinds of large granules interspersed in the cytoplasm one type is spherical and electron dense (Ø650 nm), the other spherical and less electron dense (Ø900 nm). Type VI-cells contain small spherical granules (Ø310 nm). Type VI-cells exhibit smaller granules (Ø250 × 500 nm), oval to elongated in shape. Type IV- cells contain granules (Ø540 nm) of high electron density showing a positive reaction to the Hellman-Hellerström silver impregnation and a negative reaction to Grimelius' silver impregnation they are most probably analogous to D-cells of other species. Type II-cells are possibly analogous to A-cells, while type III-cells resemble mammalian enterochromaffin cells. Type II-cells have spherical (Ø700 nm), type III-cells spherical to elongated granules (Ø450 × 750 nm). Type II- and III-cells possess large granules stainable with orange G and azocarmine and show strong luminescence with dark-field microscopy. This cell type contains numerous small secretory granules (Ø280 nm). Only B-cells ( type I) display a positive reaction with pseudoisocyanin and aldehyde-fuchsin staining. Using correlative light and electron microscopy, eight islet cell types were identified: Sometimes, single islet cells or small groups of endocrine elements are also incorporated into acini. In the pancreas of Scyliorhinus stellaris large islets are usually found around small ducts, the inner surface of which is covered by elongated epithelial cells thus the endocrine cells are never exposed directly to the lumen of the duct.
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