Editing Carcinogen (section)

=== International Agency for Research on Cancer ===
The [[International Agency for Research on Cancer]] (IARC) is an intergovernmental agency established in 1965, which forms part of the [[World Health Organization]] of the [[United Nations]]. It is based in [[Lyon]], [[France]]. Since 1971 it has published a series of ''Monographs on the Evaluation                          of Carcinogenic Risks to Humans''<ref>{{cite web|url=http://monographs.iarc.fr/ |title=IARC Monographs |publisher=Monographs.iarc.fr |access-date=2010-09-22}}</ref> that have been highly influential in the classification of possible carcinogens.
* [[List of IARC Group 1 carcinogens|Group 1]]: the agent (mixture) is carcinogenic to humans. The exposure circumstance entails exposures that are carcinogenic to humans.
* [[List of IARC Group 2A carcinogens|Group 2A]]: the agent (mixture) is most likely (''product more likely to be'') carcinogenic to humans. The exposure circumstance entails exposures that are probably carcinogenic to humans.
* [[List of IARC Group 2B carcinogens|Group 2B]]: the agent (mixture) is possibly (''chance of product being'') carcinogenic to humans. The exposure circumstance entails exposures that are possibly carcinogenic to humans.
* [[List of IARC Group 3 carcinogens|Group 3]]: the agent (mixture or exposure circumstance) is not classifiable as to its carcinogenicity to humans.
* [[List of IARC Group 4 carcinogens|Group 4]]: the agent (mixture) is most likely not carcinogenic to humans.