Domestic animals as sentinels for environmental carcinogenic agents.

The article presents evidences that lymphomas in dogs of the city of São Paulo, Brazil, may be associated to exposure to air pollution and its association with human lymphomas in the city. It presents results of two studies aimed to investigate the possible factors associated with the development of canine lymphomas and to verify and compare the spatial distribution of canine and human lymphomas in the city, respectively. It also suggests to control air pollution in the city.