PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3322277-1 1987 A direct measurement of both angiotensins I and II immunoreactive substances was made in the perfusate from isolated rat kidney perfused with Krebs-Ringer solution which was free of any component of the renin-angiotensin system. krebs 142-147 angiotensinogen Rattus norvegicus 29-50