mice given the LEM solution was 0.070+0.034 g (49.3% of the tumor weight of the water-control group). Although there was no statistically significant difference between the tumor weights on day 27 for these 2 groups of mice (P=0.16 by the Mann-Whitney U test), the ratio of the tumor weight of the LEM group to that of the weight- group was 0.493 on day 27, which was similar to the ratio of the tumor volume of the LEM group to that of the weight- group (0.499) on day 27.