PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7689605-0 1993 Phorbol ester 12-O-tetradecanoylphorbol-13-acetate down-regulates expression of the c-kit proto-oncogene product. Phorbol Esters 0-13 KIT proto-oncogene, receptor tyrosine kinase Homo sapiens 84-89