Δ9-tetrahydrocannabinol-induced MAPK/ERK and Elk-1 activation in vivo depends on dopaminergic transmission. - Valjent, Emmanuel; Pagès, Christiane; Rogard, Monique; Besson, Marie‐Jo; Maldonado, Rafael; Caboche, Jocelyne (European Journal of Neuroscience, 2001)