PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22605930-3 2012 METHODS: HCE-2 cells were exposed to the commercial eye drops Travatan, Systane Ultra, Xalatan, and the preservative BAK. Travoprost 62-70 carboxylesterase 2 Homo sapiens 9-14