Web Resources for Carcinogen
Relevant Clinical Literature
Wikipedia on Carcinogen (Less technical, ? quality control)
UpToDate® on Carcinogen (Technical, SUBSCRIPTION)
An oncogenic agent.
The definitive WHO list of known carcinogens is at International Agency for Research on Cancer monographs on the evaluation of carcinogenic risks to humans (IARC Monographs). You can search a pdf list.