PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3096150-4 1986 When PTH was infused in TPTX rats to maintain constant the plasma PTH level, subsequent phosphate infusion increased [Pi]u and elevated U-B PCO2 for any value of [HCO3]u. pco2 140-144 parathyroid hormone Rattus norvegicus 5-8