The Food and Drug Administration said that some chicken meat may contain small amounts of arsenic, though the agency is stressing that the amount is too tiny to be dangerous to people who eat it, according to the Associated Press. The FDA said that a new study developed by the agency shows that an ingredient in chicken feed that contains arsenic, called Roxarsone, may make its way into parts of the bird that are eaten. Previous studies have indicated that the arsenic was eliminated with chicken waste. Pfizer Inc., which makes the feed ingredient, said that it will pull it off the market in the United States. Had the company not stopped sales, the FDA could have eventually banned the product since it contains a known carcinogen. Many poultry producers have already stopped feeding their birds the ingredient, which has been used since the 1940s to kill parasites and promote growth.