Relative mRNA expression of 20 weeks old males on high fat diet. Relative mRNA expression level of Rsad2 from epididymal adipose tissue. Different BXD RI strains carrying either the C57BL/6J (B6) or DBA/2J (D2) allele at the position of the target gene were chosen randomly from the BXD recombinant inbred strains (one animal per strain) for gene expression analyses. Bar graphs with different letters are significantly different to a level of significance of p = 0.03; n = 6–8. Statistics were performed using the two-tailed Student’s t-test and bar graphs are mean values plus SD.