Tungsten carbide (WC) particles can enter the body via the food in case of lacking hygiene conditions. Likewise, an uptake via drinking water is possible. Incorporation is followed by an enhanced level of tungsten in the blood and in the urine.


Results obtained by in vitro assays indicate an uptake of nano-sized WC particles into cells of the large intestine. WC nanoparticles were never detected in the cell nuclei [1].



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