PPARα pancreas THC memory Brain GPR55 thalamus TRPV1 Brain Disorders CBC TRPV4 hippocampus cerebellum CBDV CB1 CB2 Anandamid 2AG hippocampal stem TRPM8 TRPV2 Terpenes anti-inflammatory CBN immune system Cancer Δ9THC Immune Disorders CBGA Cannabinoid Receptors TRPV3 THCV PEA THCA Diseases tumor Anandamide nervous system substantia nigra Other Disorders & Therapeutic Uses Synthesizing & Degrading Enzymes Endocannabinoids microglia OEA NADA appetite 9THC PPARγ cells CBG CBD TRPA1 Metabolic Disorders CBDA NarGly Plant Cannabinoids GPR119 Pain putamen