PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10869726-7 2000 As the effects of agonist activation of P2X(2) purinoceptors expressed in HEK293 cells and Xenopus oocytes are potentiated by lowering pH, these data imply that the central respiratory response to CO(2) depends in part on the pH sensitivity of purinoreceptors located on inspiratory neurones. co(2) 197-202 purinergic receptor P2X 2 Homo sapiens 40-46