ω-3-PUFAs up-regulate the expression of insulin-sensitizing genes in adipose tissue and liver in ob/ob mice. Expression of PPARγ, IRS-1, and GLUT-4 in adipose tissue (A) and their counterparts in the liver (i.e., PPARγ, IRS-2, and GLUT-2) (B) was determined by real-time RT-PCR in samples from ob/ob mice receiving either a control diet (n=8) or a diet enriched with ω-3-PUFAs (n=16). Results are expressed as means ± se; P values vs. CT group.