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Apoptosis rates of H22 transplanted tumor cells, values are shown as mean ± SD (n=5). *P < 0.05 vs control. CTX=cyclophosphamide (60 mg/kg); AIH=Astragalus injection (12g/kg); AIM=Astragalus injection (8 g/kg); AIL=Astragalus injection (4 g/kg).
