Fig. 4

Degree of neoplasm cell infiltration in the livers (a) and spleens (b) of mice. The mean proportion of neoplasm cells was calculated from five randomly selected fields by scanning the tissue sections at high power using an Olympus CX31 microscope (400 × magnification). The results are expressed as the mean ± SD, and samples were obtained from 10 mice per group. ** P < 0.01 and *** P < 0.001