Exocytosis in the adrenal medulla demonstrated by freeze-etching.
Replicas of fractured chromaffin cells are indicative of a range of activities thought to characterize exocytosis, including attachment of secretory vesicles to the plasma membrane, fusion, extrusion of contents, and membrane retrieval. Exocytosis sites are abundant on stimulated cells but are infrequent when calcium is omitted from the system.
D000313:Adrenal Medulla / Q000166:cytology* / Q000187:drug effects; D000804:Angiotensin II / Q000494:pharmacology; D000818:Animals; D001920:Bradykinin / Q000494:pharmacology; D002118:Calcium; D002395:Catecholamines / Q000378:metabolism; D002462:Cell Membrane; D002477:Cells / Q000378:metabolism*; D006224:Cricetinae; D005089:Exocytosis / Q000187:drug effects; D005110:Extracellular Space; D005613:Freeze Etching; D008854:Microscopy, Electron; D010477:Perfusion
D002395:Catecholamines; D000804:Angiotensin II; D001920:Bradykinin; D002118:Calcium