Fig. 1
From: The effect of aging on the repeated-dose liver micronucleus assay
Comparison of body weights of rats of 6 and 8 weeks of age at the start of administration using clofibrate. Body weights (g); Comparison between the vehicle group and clofibrate-treated group in rats of 6 weeks of age (A) and rats of 8 weeks of age (B) at the start of administration. Values are presented as the mean and SD. Differences in the body weights between the test and vehicle control groups were analyzed by the Dunnett test at significance levels of 5 and 1% (*: P < 0.05, **: P < 0.01)