PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3402554-2 1988 An increase in cellular GSH level was produced by the addition of N-acetylcysteine (NAC), a carrier of cysteine across cell membranes, into the culture medium, while a decrease in GSH level was produced by the addition of L-buthionine-(R,S)-sulfoximine (BSO), a specific inhibitor of GSH synthetase. Glutathione 24-27 glutathione synthetase Homo sapiens 284-298