PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16263272-0 2005 Growth inhibition of estrogen receptor-positive and aromatase-positive human breast cancer cells in monolayer and spheroid cultures by letrozole, anastrozole, and tamoxifen. Anastrozole 146-157 estrogen receptor 1 Homo sapiens 21-38