Excitation of squid giant axons in sodium-free external media.
D000643:Ammonium Chloride / Q000494:pharmacology; D000818:Animals; D001369:Axons / Q000502:physiology*; D004594:Electrophysiology; D005459:Fluorides / Q000494:pharmacology; D006146:Guanidines / Q000494:pharmacology; D006834:Hydrazines / Q000494:pharmacology; D066298:In Vitro Techniques; D008974:Mollusca; D010477:Perfusion; D012964:Sodium; D013779:Tetrodotoxin / Q000494:pharmacology
D006146:Guanidines; D006834:Hydrazines; D000643:Ammonium Chloride; D013779:Tetrodotoxin; D012964:Sodium; D005459:Fluorides