Tetrodotoxin: action on graded responses.
D000818:Animals; D003445:Crustacea; D003864:Depression, Chemical; D008564:Membrane Potentials / Q000187:drug effects*; D009474:Neurons / Q000187:drug effects / Q000502:physiology*; D013779:Tetrodotoxin / Q000494:pharmacology*
D013779:Tetrodotoxin