title: Optical density changes of single muscle fibres in sodium-free solutions.
mesh_terms: D000818:Animals; D003445:Crustacea; D006652:Histological Techniques / Q000295:instrumentation; D006863:Hydrogen-Ion Concentration; D008094:Lithium / Q000378:metabolism; D008433:Mathematics; D009132:Muscles / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*; D012996:Solutions; D013053:Spectrophotometry
chemical_list: D012996:Solutions; D008094:Lithium; D012964:Sodium