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A 65 year old man who worked for 30 years in a chemical factory complains of blood in his urine. urien cytology discoles dysplstic cells. A bladder biobsy demostates transtitonal-cell carcinoma. Which of the following carcinogen was most likely involved in the pathogenesis of bladder cancer in this patient?

Anilne dye

Arsenic

Benzene

Vinyl Chlodride

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Category:- Biology
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