ACETATO DE MEDROXIPROGESTERONA CANCER DE MAMA ESTROGEN RECEPTOR ALFA MAMMARY CARCINOMAS MEDROXYPROGESTERONE ACETATE PROGESTERONE RECEPTOR RECEPTOR DE ESTROGENOS ALFA RECEPTOR DE PROGESTERONA Animals Mice Western blotting article cell proliferation controlled study cyclin D1 drug effect enzyme activation mitogen activated protein kinase mouse nonhuman priority journal protein expression 1,4 diamino 1,4 bis(2 aminophenylthio) 2,3 dicyanobutadiene 2 (2 amino 3 methoxyphenyl)chromone 4 (4 fluorophenyl) 2 (4 methylsulfinylphenyl) 5 (4 pyridyl)imidazole Animalia Antiprogestins Blotting, Western Breast cancer treatment Cell Division