PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28103621-1 2017 Background and study aims Acetic acid chromoendoscopy (AAC) enhances the ability to correctly identify Barrett"s neoplasia, and is increasingly used by both expert and nonexpert endoscopists. Acetic Acid 26-37 glycine-N-acyltransferase Homo sapiens 55-58