RT Journal Article SR Electronic T1 In vivo detection of optically-evoked opioid peptide release JF bioRxiv FD Cold Spring Harbor Laboratory SP 393603 DO 10.1101/393603 A1 Ream Al-Hasanil A1 Jenny-Marie T. Wong A1 Omar S. Mabrouk A1 Jordan G. McCall A1 Gavin P. Schmitz A1 Kirsten A. Porter-Stransky A1 Brandon J. Aragona A1 Robert T. Kennedy A1 Michael R. Bruchas YR 2018 UL http://biorxiv.org/content/early/2018/08/16/393603.abstract AB Though the last decade has seen accelerated advances in techniques and technologies to perturb neuronal circuitry in the brain, we are still poorly equipped to adequately dissect endogenous peptide release in vivo. To this end we developed a system that combines in vivo optogenetics with microdialysis and a highly sensitive mass spectrometry-based assay to measure opioid peptide release in freely moving rodents.