... and low concentrations of the other studied antagonists (diphenhydramine, dithiadene, stobadine) than the tracheal smooth muscle, it is inferred that the density of H 2 receptors is higher in peripheral than central airways. From all the studied histamine receptor antagonists only dithiadene was able...

...Peter Bánovčin; Peter Višňovský; Juraj Korpáš; Ján Hanáček The reactivity of cat tracheal smooth muscle to histamine in vitro was studied at various degrees of inflammation of the airways induced experimentally by the intratracheal administration of turpentine oil or Staphylococcus aureus, both...