Norepinephrine Induces Grain

I like the mix of this paper kind of old school new school ways of doing things. Yeah it's really old technology too just inject something into the mouth. Right this is this is the great thing though as I think that the best papers have a nice mix of the new technology with some of the old techniques. So if they lesioned the sympathetic nerve innervation of the skin they can block the effect of stress on grain and then they can also use a system that we brought up last time on the last episode called Dreds which are G-protein coupled receptors to not respond to their cognate ligand but instead respond to an exogenous compound.