title: The influence of initial tension on the reactivity of guinea-pig tracheal preparations to histamine.
mesh_terms: D000818:Animals; D001665:Binding Sites / Q000187:drug effects; D006168:Guinea Pigs; D006632:Histamine / Q000494:pharmacology*; D008722:Methods; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects; D010600:Pharmacology; D014132:Trachea / Q000187:drug effects*
chemical_list: D006632:Histamine