PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14583343-1 2003 Changes in plasma nitrite concentration in the human forearm circulation have recently been shown to reflect acute changes in endothelial nitric oxide synthase (eNOS)-activity. Nitrites 18-25 nitric oxide synthase 3 Homo sapiens 126-159