Fig. 4From: New homozygous gpt delta transgenic rat strain improves an efficiency of the in vivo mutagenicity assayThe Spi− mutant frequencies in the liver and bone marrow of BaP- or ENU- treated homozygous gpt delta rats. Error bar represents standard deviation. * P < 0.05, significantly different from vehicle control (Steel test). # P < 0.05, significantly different from vehicle control (Dunnett’s test)Back to article page