Genetic Association of GABA-A Receptor Alpha-2 and Mu Opioid Receptor with Cocaine Cue-Reactivity: Evidence for Inhibitory Synaptic Neurotransmission… … Originally posted here: Genetic Association of GABA-A Receptor Alpha-2 and Mu Opioid Receptor with Cocaine Cue-Reactivity: Evidence for Inhibitory Synaptic Neurotransmission…