The "life" lead by chimps in the labs' often undersized cages leaves lifelong emotional scars. Psychological disorders can be experienced, causing depression leading to self-mutilation. Chimps are used as models and often injected with AIDS, hepatitis, cancer, Alzheimer's, Parkinson's, leprosy, heart disease, and other human health problems, which they would never encounter in their natural habitat. The United States is the only industrialized nation still carrying out these cruel and disgusting experiments on the chimps. Passage of HR 1513 would allow chimps to lead fruitful lives, and even send 500 captive chimps to sanctuaries throughout the US.