3,4-benzpyrene

A chemical that comes from certain substances when they are not burned completely. It is found in car exhaust, smoke from wood fires, tobacco, oil and gas … [Read more...]

3F8

A type of monoclonal antibody used in cancer detection or therapy. Monoclonal antibodies are laboratory-produced substances that can locate and bind to cancer … [Read more...]

3T MRI

A procedure in which radio waves and a powerful magnet linked to a computer are used to make detailed pictures of areas inside the body. These pictures can show … [Read more...]

4-demethoxydaunorubicin

A drug used in the treatment of cancer. It is a type of antitumor antibiotic. Also called idarubicin. … [Read more...]

4-hydroxytamoxifen

A form of the drug tamoxifen that is made by the body after taking tamoxifen. It can also be made in the laboratory, and may help decrease breast density. A … [Read more...]

4-nitroquinoline 1-oxide

A substance that is used in cancer research to cause tumors in laboratory animals. This is done to test new diets, drugs, and procedures for use in cancer … [Read more...]

4-NQO

A substance that is used in cancer research to cause tumors in laboratory animals. This is done to test new diets, drugs, and procedures for use in cancer … [Read more...]

45 CFR 46

Laws set by the U.S. Department of Health and Human Services (DHHS) to protect a person from risks in research studies that any federal agency or department has … [Read more...]

45 Code of Federal Regulations Part 46

Laws set by the U.S. Department of Health and Human Services (DHHS) to protect a person from risks in research studies that any federal agency or department has … [Read more...]

5-alpha reductase inhibitor

A substance that blocks an enzyme needed by the body to make dihydrotestosterone (a male sex hormone made from testosterone). Dihydrotestosterone can cause the … [Read more...]