title: Neuromuscular blocking activity of a new series of semisynthetic quaternary pyrrolizidines.
mesh_terms: D000818:Animals; D066298:In Vitro Techniques; D009466:Neuromuscular Blocking Agents; D009469:Neuromuscular Junction / Q000187:drug effects; D011763:Pyrrolizidine Alkaloids / Q000494:pharmacology*; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D009466:Neuromuscular Blocking Agents; D011763:Pyrrolizidine Alkaloids