title: The fine structure of the long-capsule muscle spindles in the snake Natrix sp.
mesh_terms: D000818:Animals; D001369:Axons; D001485:Basement Membrane; D002467:Cell Nucleus; D003094:Collagen / Q000032:analysis; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009046:Motor Neurons; D009470:Muscle Spindles / Q000166:cytology*; D009210:Myofibrils; D009411:Nerve Endings; D009413:Nerve Fibers, Myelinated; D009469:Neuromuscular Junction; D012519:Sarcoplasmic Reticulum; D012583:Schwann Cells; D012911:Snakes / Q000033:anatomy & histology*
chemical_list: D003094:Collagen