title: The occurrence of melanosomes in the newt glomus cell.
abstract: Combined light and electron microscopic observations of the carotid labyrinth of the newt, Cynops pyrrhogaster, revealed the occurrence of glomus cells with melanosomes (MG cells), a finding so far unreported in the amphibian carotid labyrinth. These melanosomes, which derived from melanophores, were electron-dense and usually oval (250-700 nm in diameter). They occurred in groups enclosed by a limiting membrane, and the diameter of clusters was approximately 1.5 microns. These clusters were surrounded by a large number of dense-cored vesicles (60-100 nm in diameter), which were predominantly located in the glomus cell cytoplasm. The density of dense-cored vesicles in MG cells was higher than that in regular glomus cells (G cells).
authors.affiliation: Department of Anatomy, Yokohama City University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kusakabe
mesh_terms: D000818:Animals; D002344:Carotid Body / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D006056:Golgi Apparatus / Q000648:ultrastructure; D008544:Melanocytes / Q000648:ultrastructure*; D008854:Microscopy, Electron; D012455:Salamandridae / Q000033:anatomy & histology*