N lines in striated muscle: a site of intracellular  Ca2+ .
D000818:Animals; D001001:Anura; D002118:Calcium / Q000032:analysis*; D004558:Electric Stimulation; D004594:Electrophysiology; D008854:Microscopy, Electron; D009132:Muscles / Q000166:cytology* / Q000502:physiology
D002118:Calcium