Adaptation of the guinea-pig to histamine. Sensitivity of the guinea-pig's ileum to histamine and acetylcholine.
D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D004361:Drug Tolerance; D006168:Guinea Pigs; D006632:Histamine / Q000494:pharmacology*; D007082:Ileum / Q000187:drug effects*; D066298:In Vitro Techniques; D009130:Muscle, Smooth / Q000187:drug effects*
D006632:Histamine; D000109:Acetylcholine