Low Doses of Arsenic Cause Cancer in Male Mice (image) NIH/National Institute of Environmental Health Sciences Share Print E-Mail Caption Lung tumors occur in adult male mice after being exposed to low levels of arsenic throughout their life. The 50 parts per billion (ppb) concentration is within the range to which humans are exposed. Credit NIEHS Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.