KOVACS B A, PELLETIER G, ROSE B
Br J Pharmacol Chemother. 1963 Dec;21(3):419-26. doi: 10.1111/j.1476-5381.1963.tb02009.x.
A method for the extraction of an antihistamine-like substance (or substances) from human tissues is described. The method has demonstrated the presence of this active principle(s) in a large variety of human tissues, so far without exception. The substance(s) has a wide range of activity in antagonizing the in vitro effects of histamine, 5-hydroxytryptamine and bradykinin and the Schultz-Dale reaction on the guinea-pig ileum and rat uterus preparations.