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. Author manuscript; available in PMC: 2013 Jun 13.
Published in final edited form as: Physiol Behav. 2007 Nov 21;93(0):671–686. doi: 10.1016/j.physbeh.2007.11.012

Fig. 1.

Fig. 1

Chemical structures of the phytocannabinoids Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol and the endocannabinoids anandamide (AEA) and 2-arachidonoylglycerol (2-AG). In this and all other structure figures (i.e., Figs. 3–6), comparative Ki or IC50 values for ligand binding to CB1 and CB2 receptors are given (when available) from literature references cited in the relevant text.