PhIP (2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine) has been found in cooked meat and fish at concentrations of up to 70 ng/g. This was enough to induce an activist group into suing California restaurants over Prop 65 cancer warnings for grilled chicken; a California appeals court sided on the side of overwarning, despite the lack of evidence that cooking byproduct PHiP has any carcinogenic effect at cooked-chicken levels. [Fisher @ Forbes; WSJ Law Blog; IARC summary; earlier on Overlawyered]