Endogenous Serotonin System Does Not Participate in the Withdrawal Opiate, But Its Inhibition by Stimulation 5-HT1A Receptor Increases the Effectiveness of the Clonidine in Rats El Sistema endógeno De Serotonina No Participa En La Abstinencia opiácea. HAAJ 2003, 3 (1). https://doi.org/10.21134/haaj.v3i1.150.