title: Fine structure of fast-twitch and slow-twitch guinea pig muscle fibers.
mesh_terms: D000818:Animals; D002196:Capillaries / Q000033:anatomy & histology; D006168:Guinea Pigs / Q000033:anatomy & histology*; D006614:Hindlimb / Q000033:anatomy & histology; D006651:Histocytochemistry; D050356:Lipid Metabolism; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009119:Muscle Contraction; D009132:Muscles / Q000098:blood supply / Q000166:cytology* / Q000378:metabolism; D012519:Sarcoplasmic Reticulum