title: Nervous control and spontaneous activity of the chromatophores of a cephalopod, Loligo opalescens.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002856:Chromatophores; D004558:Electric Stimulation; D008974:Mollusca / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology*; D009119:Muscle Contraction / Q000502:physiology*; D010830:Physostigmine / Q000494:pharmacology; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology; D012701:Serotonin / Q000494:pharmacology
chemical_list: D000644:Quaternary Ammonium Compounds; D012701:Serotonin; D001285:Atropine; D010830:Physostigmine; D000109:Acetylcholine