Motor myoneural junctions on frog intrafusal muscle fibers.
D000818:Animals; D001001:Anura; D003593:Cytoplasm; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D008928:Mitochondria; D009046:Motor Neurons; D009470:Muscle Spindles / Q000166:cytology*; D009132:Muscles / Q000033:anatomy & histology*; D009186:Myelin Sheath; D012583:Schwann Cells