3d image of tetrachlorodibenzodioxin skeletal formula

tetrachlorodibenzodioxin tetrachlorooxanthrene structure tumor promotion solution toxicity target organ functional group carcinogen bioactivation metabolite complex mechanism dichloro tcdd agent orange dioxin poisoning persistent organic pollutant herbicide receptor biohazard vietnam war defoliant 3d rendering molecular structural formula plant poison venom toxic toxin hazard ld50 teratogen cancer carcinogenicity carcinogenic aerosol weapon