Tetrodotoxin blocks a graded sensory response in the eye of Limulus.
D000818:Animals; D003445:Crustacea; D004594:Electrophysiology; D005123:Eye / Q000187:drug effects*; D066298:In Vitro Techniques; D009799:Ocular Physiological Phenomena; D009900:Optic Nerve / Q000502:physiology*; D013779:Tetrodotoxin / Q000494:pharmacology; D014118:Toxins, Biological / Q000494:pharmacology*; D014785:Vision, Ocular
D014118:Toxins, Biological; D013779:Tetrodotoxin