The spindle in normal and pathological muscle.
D000367:Age Factors; D001706:Biopsy; D005333:Fetus / Q000033:anatomy & histology; D006801:Humans; D007231:Infant, Newborn; D009470:Muscle Spindles / Q000033:anatomy & histology* / Q000473:pathology*; D009132:Muscles / Q000033:anatomy & histology / Q000473:pathology; D009133:Muscular Atrophy / Q000473:pathology; D009136:Muscular Dystrophies / Q000473:pathology; D009220:Myositis / Q000473:pathology; D009223:Myotonic Dystrophy / Q000473:pathology