Microglia are immunocompetent cells of the central nervous system and express various ionotropic P2X and metabotropic P2Y purinoceptors.

• 小胶质细胞是一种中枢神经系统的免疫活性细胞，可以表达亲离子型P2X嘌呤受体和亲代谢型P2Y嘌呤受体。