Most papers talk about co release of neurotransmitters for example...PAG glutamatergic neurons co-release substance P, serotonin, opiods etc....I was wondering if anyone came across a paper showing co-labelling for VGLUT and GAD
The short answer is yes. As an example out of my mind are VTA neurons (http://www.nature.com/neuro/journal/v17/n11/full/nn.3823.html) but I believe they are not the only ones - need to do some literature on this.