title: External calcium and contractility in single giant muscle fibres.
mesh_terms: D000331:Aequorin; D000818:Animals; D002118:Calcium / Q000378:metabolism / Q000494:pharmacology*; D003445:Crustacea; D066298:In Vitro Techniques; D008564:Membrane Potentials; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000378:metabolism
chemical_list: D000331:Aequorin; D002118:Calcium