The constant size of circular mitochondrial DNA in several organisms and different organs.
D000818:Animals; D002417:Cattle; D004247:DNA / Q000032:analysis*; D006168:Guinea Pigs; D051379:Mice; D008854:Microscopy, Electron; D008928:Mitochondria / Q000032:analysis*; D008930:Mitochondria, Liver / Q000032:analysis; D008931:Mitochondria, Muscle / Q000032:analysis; D051381:Rats
D004247:DNA