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Proc Natl Acad Sci USA 101: 85698574

Fresh tendon tears, recent muscle strains, and post-surgical recovery situations often warrant standard or even aggressive dosing protocols

The second and third most frequently mutated genes are PIK3CA that encodes the p110 alpha catalytic subunit of PI3 kinase and PTEN, a lipid phosphatase that regulates Akt kinase activation, which are mutated in 17.8 and 9.7% of the cases of the 12 common tumor types, respectively ( Wild type p53 protein induces cell cycle arrest, senescence, and apoptosis in response to cellular stress by upregulating target genes such as p21, Bax, Puma, and Noxa ( In vivo studies in mice have shown that certain engineered p53 mutants that fail to transactivate pro-arrest and pro-apoptosis target genes can still prevent tumor development ( Oncogenic stress as a result of oncogene activation or loss of cell cycle control characterizes early stages of tumor evolution