Dioxins are unintentionally produced by incomplete combustion. The substances are persistent, difficult to degrade or metabolize. They like to bioaccumulate in fatty tissues and can stay there for a very long time and can be unchanged biomagnified in the food chain. Dioxins and furans are extremely toxic.
Matrixes for environmental biomarkers are among others; eggs of backyard chicken, milk of cow and goat, liver of sheep, human serum, tree bark, grass
The biotechnological technique of Chemical Activated LUciferase gene eXpression (CALUX) was used a broad set of samples.