title: The fine structure of the short capsule muscle spindles in snakes of natrix sp.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D008854:Microscopy, Electron; D009470:Muscle Spindles / Q000166:cytology* / Q000502:physiology; D009132:Muscles / Q000166:cytology / Q000294:innervation; D009210:Myofibrils; D012911:Snakes / Q000033:anatomy & histology*