Mitochondrial matrix granules, dense particles and the sequestration of calcium by mitochondria.
D000818:Animals; D001842:Bone and Bones / Q000032:analysis; D002118:Calcium / Q000032:analysis / Q000378:metabolism*; D002356:Cartilage / Q000032:analysis / Q000166:cytology; D002451:Cell Compartmentation; D004577:Electron Probe Microanalysis; D008855:Microscopy, Electron, Scanning; D008928:Mitochondria / Q000378:metabolism* / Q000648:ultrastructure; D013367:Submitochondrial Particles / Q000032:analysis / Q000648:ultrastructure
D002118:Calcium