title: The early phase of calcium entry in giant axons of Loligo.
mesh_terms: D000818:Animals; D001369:Axons / Q000378:metabolism*; D001693:Biological Transport, Active / Q000187:drug effects; D002118:Calcium / Q000378:metabolism*; D004553:Electric Conductivity; D066298:In Vitro Techniques; D008564:Membrane Potentials; D008974:Mollusca; D012964:Sodium / Q000378:metabolism; D013779:Tetrodotoxin / Q000494:pharmacology; D013997:Time Factors
chemical_list: D013779:Tetrodotoxin; D012964:Sodium; D002118:Calcium