Fig. 2
From: The effect of aging on the repeated-dose liver micronucleus assay
Comparison of RDLMN assay results of rats of 10 and 12 weeks of age at the end of administration using clofibrate. Incidences of MNHEPs (%); Comparison between the vehicle group and clofibrate-treated group in rats of 10 and 12 weeks of age at the end of administration. Differences in the incidences of MNHEPs between the test and vehicle control groups were analyzed by the Kastenbaum and Bowman test at significance levels of 5 and 1% (*: P < 0.05, **: P < 0.01)