title: Unique sensory endings in rat muscle spindles.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001369:Axons; D002467:Cell Nucleus; D005865:Gestational Age; D002479:Inclusion Bodies; D008247:Lysosomes; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D024510:Muscle Development; D009470:Muscle Spindles / Q000166:cytology*; D009132:Muscles / Q000196:embryology / Q000294:innervation*; D009411:Nerve Endings / Q000166:cytology*; D051381:Rats; D012583:Schwann Cells; D013249:Sternum; D013961:Thyroid Gland