Animals 1 Cadherins 1 Cell Differentiation 1 Cell Line, Tumor 1 Cell Proliferation 1 Female 1 Focal Adhesion Protein-Tyrosine Kinases 1 Humans 1 Keratin-8 1 Laminin 1 Mammary Neoplasms, Experimental 1 Medroxyprogesterone Acetate 1 Mice 1 Mice, Inbred BALB C 1 Mice, Nude 1 Phosphatidylinositol 3-Kinases 1 Phosphorylation 1 Proto-Oncogene Proteins c-akt 1 Receptors, Estrogen 1 Receptors, Progesterone 1 Signal Transduction 1 TOR Serine-Threonine Kinases 1 animal experiment 1 animal model 1 animal tissue 1 article 1 breast cancer 1 cancer cell 1 cancer cell culture 1 cancer growth 1