PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14633737-9 2003 Treatment with Let, Tam, or E2W resulted in a dose- and time-dependent increase in active caspase-7 and up-regulation of p53 and p21 protein. Tamoxifen 20-23 tumor protein p53 Homo sapiens 121-124