A, B, C, D: Shows kidney sections of mice in group 8 at 5th week of the experiments,  the kidney section revealed slightly degeneration of renal cortex and medulla, infiltration of the inflammatory cells, degeneration of  glomeruli,  congestion, and  no obvious aggregations of immature cancer cell A. X 4, B. X10, C.X20, D. X40). (H&E).