Active Transport, Cell Nucleus Animals Blotting, Western Cancer cells Catalase Cell Line, Tumor Cell Nucleus Cell cycle Cyclin D1 Cyclin-Dependent Kinase Inhibitor p27 Female Fluorescent Antibody Technique Free Radical Scavengers G1 Phase Hydrogen Peroxide Hydrogen peroxide Mice Mice, Inbred SENCAR Mice, Nude P27kip1 Proliferation Reactive Oxygen Species S Phase Western blotting active transport animal animal cell animal experiment animal model animal tissue