PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11509826-1 2001 In excitatory cells specific responses upon changes in PO(2) are mediated by changes in intracellular Ca (Ca(i)). PO-2 55-60 carbonic anhydrase 1 Rattus norvegicus 106-111