PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28781793-11 2017 On immunohistochemical examination, cyclooxygenase (COX)-1 and COX-2 were strongly positive, indicating that the tumor activated the arachidonic acid metabolic pathway and produced prostaglandin. Arachidonic Acid 133-149 mitochondrially encoded cytochrome c oxidase II Homo sapiens 63-68