Mechanistic insights into how analgesic agent Cannabidiol (CBD) attenuates pain: Cannabidiol (CBD), an analgesic drug derived from hemp and others, increases the expression of PD-L1, attenuates acute and chronic pain, and suppresses mechanical and thermal hypersensitivity and inhibits nociceptive neuron excitability via up-regulation of its target gene, 7/May/2019, 6.04 am