Development of muscle spindles deprived of fusimotor innervation.
D000818:Animals; D002467:Cell Nucleus; D003594:Cytoplasmic Granules; D003714:Denervation; D002479:Inclusion Bodies; D008854:Microscopy, Electron; D008870:Microtubules; D008928:Mitochondria; D009046:Motor Neurons; D024510:Muscle Development; D009470:Muscle Spindles / Q000166:cytology / Q000254:growth & development*; D009132:Muscles / Q000166:cytology / Q000294:innervation; D009210:Myofibrils; D009476:Neurons, Efferent; D051381:Rats; D012519:Sarcoplasmic Reticulum; D013569:Synapses; D013997:Time Factors