title: Modification of 5-HT action by magnesium ions on the guinea pig ileum.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000187:drug effects; D004357:Drug Synergism; D006168:Guinea Pigs; D007082:Ileum / Q000166:cytology / Q000187:drug effects*; D066298:In Vitro Techniques; D008274:Magnesium / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D012701:Serotonin / Q000494:pharmacology*; D013618:Tachyphylaxis
chemical_list: D012701:Serotonin; D008274:Magnesium