Serotonin-like and Antiserotonin Properties of Psilocybin and Psilocin Science June 1, 1962 D. W. Woolley, N.k. Campbell 13 citations These psychotomimetic analogs of serotonin act like this hormone in some tests and against it in others. DOI: 10.1126/science.136.3518.777 (opens in new tab) Psilocybin Hallucinogen Serotonin antagonists 5-HT Receptor +1