title: Calcium-containing structures in vertebrate glial cells. Ultrastructural and microprobe analysis.
abstract: Electron probe microanalysis has revealed that vesicular or cisternal structures containing electron-dense material in frog ependymal glial cells contain deposits of calcium and phosphorus. The so-called "osmiophilic particles" in human astrocytes also contain calcium. It is suggested that these organelles are storage sites of calcium.
mesh_terms: D000818:Animals; D001253:Astrocytes / Q000032:analysis / Q000648:ultrastructure; D001921:Brain / Q000648:ultrastructure; D002118:Calcium / Q000032:analysis; D003593:Cytoplasm / Q000032:analysis; D004577:Electron Probe Microanalysis; D006801:Humans; D008247:Lysosomes / Q000032:analysis; D008854:Microscopy, Electron; D008928:Mitochondria / Q000032:analysis; D009186:Myelin Sheath / Q000032:analysis; D009457:Neuroglia / Q000032:analysis / Q000648:ultrastructure*; D009940:Organoids / Q000032:analysis / Q000648:ultrastructure; D011894:Rana pipiens; D013116:Spinal Cord / Q000648:ultrastructure*
chemical_list: D002118:Calcium