
Amphetamine triggers an increase in met-enkephalin simultaneously in brain areas and immune cells
Keywords: RIA، radioimmunoassay; IS, immune system; DA, dopamine; NAc, nucleus accumbens; PfC, prefrontal cortex; ENK, enkephalin; AMPH, amphetamine; Con A, concanavalin-A; VEH, vehicle; ZT, zeitgeber; RIA, radioimmunoassay; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; FITC, fluoresc