_:vb50938191 . _:vb50938191 "A breast cancer that is characterized by the presence of progesterone receptors."^^ . _:vb50938191 . _:vb50938191 "url:https://www.ncbi.nlm.nih.gov/pubmed/25471040"^^ . _:vb50938191 . _:vb50938191 . _:vb50938191 . _:vb50938191 "url:https://www.cancer.org/cancer/breast-cancer/understanding-a-breast-cancer-diagnosis/breast-cancer-hormone-receptor-status.html"^^ .