breast cancer 156 human 139 article 112 controlled study 112 priority journal 107 nonhuman 106 Female 97 Humans 95 female 89 human cell 89 Animals 81 Breast Neoplasms 81 mouse 78 Mice 72 BREAST CANCER 68 CANCER DE MAMA 68 animal cell 62 unclassified drug 62 protein expression 59 animal model 54 animal experiment 52 cell proliferation 51 Mice, Inbred BALB C 50 metabolism 47 Mammary Neoplasms, Experimental 38 animal tissue 38 progesterone receptor 38 Cell Line, Tumor 35 cancer cell 35 Article 34