PTGS2 and hepatocellular carcinoma: Although cross-talk of PPARγ,but not PPARα, with cyclooxygenase 2 (Cox-2), which also was relatedwith inflammation-induced hepatocellular carcinoma, has been suggested [56], there was neither induction ofCox-2 nor PPARγ in both genotyped mice of that study (datanot shown).