"0"^^ . . . "an antagonist for estrogen that is used in the treatment of breast cancer"@en-us . . . "103298565"^^ . . "tamoxifen"@en-us . . . "estrogen antagonist"^^ . . . "estrogen antagonist"@en-us . . "03298565-n"^^ . . "0"^^ . "103178684"@en-us .