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A Second Granular Cell in the Endocrine Pancreas of the Hagfish Myxine glutinosa?
Author(s) -
Thomas N.W.,
Östberg Y.,
Falkmer S.
Publication year - 1973
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1973.tb00455.x
Subject(s) - hagfish , biology , islet , parenchyma , pancreas , enteroendocrine cell , endocrine system , cell type , cell , anatomy , pathology , endocrinology , vertebrate , gene , biochemistry , medicine , botany , insulin , hormone , genetics
A light and electron microscopic re‐investigation of the pancreatic islet organ of the hagfish, Myxine glutinosa , has confirmed earlier observations that agranular and granular β‐cells are the predominant cell types. However, in addition a rare second granular parenchymal cell was observed in which the granules are spherical in shape with a mean diameter of 213 nm, contrasting with the predominantly ellipsoid granules which characterise the β‐cell. At present, this allegedly second granular parenchymal cell cannot be unequivocally equated with a named islet cell type and its nature remains somewhat problematic.