PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12590932-5 2003 Menadione increased L-arginine uptake by the cells, but inhibited endothelial nitric oxide synthase, an effect that was prevented by acute loading with ascorbate. Ascorbic Acid 152-161 nitric oxide synthase 3 Homo sapiens 66-99