title: Light-activated drug confirms a mechanism of ion channel blockade.
mesh_terms: D000818:Animals; D001391:Azo Compounds / Q000494:pharmacology*; D002217:Carbachol / Q000031:analogs & derivatives* / Q000494:pharmacology; D004557:Electric Organ / Q000378:metabolism; D004593:Electrophorus; D066298:In Vitro Techniques; D007473:Ion Channels / Q000187:drug effects / Q000502:physiology*; D007536:Isomerism; D008027:Light; D010276:Parasympatholytics / Q000494:pharmacology*
chemical_list: D001391:Azo Compounds; D007473:Ion Channels; D010276:Parasympatholytics; D002217:Carbachol