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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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10-propargyl-10-deazaaminopterin  
   A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called folate analogs.

12-O-tetradecanoylphorbol-13-acetate  
   TPA. A drug that is being studied in the treatment of hematologic cancer.

13-cis retinoic acid  
   A drug that is used in the treatment of acne and psoriasis and is being studied in cancer prevention. It belongs to the family of drugs called retinoids. Also called isotretinoin.

17-N-allylamino-17-demethoxygeldanamycin  
   A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called antitumor antibiotics.

1H-nuclear magnetic resonance spectroscopic imaging  
   A noninvasive imaging method that provides information about cellular activity (metabolic information). It is used along with magnetic resonance imaging (MRI) which provides information about the shape and size of the tumor (spacial information). Also called magnetic resonance spectroscopic imaging and proton magnetic resonance spectroscopic imaging.

2-methoxyestradiol  
   2ME2. A drug that prevents the formation of new blood vessels that tumors need in order to grow. It is derived from estrogen and belongs to the family of drugs called angiogenesis inhibitors.

2IT-BAD monoclonal antibody 170  
   A type of monoclonal antibody used in cancer detection or therapy. Monoclonal antibodies are laboratory-produced substances that can locate and bind to cancer cells.

3-aminopyridine-2-carboxaldehyde thiosemicarbazone  
   3-AP. A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called ribonucleotide reductase inhibitors. Also called Triapine®.

3-AP  
   3-aminopyridine-2-carboxaldehyde thiosemicarbazone. A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called ribonucleotide reductase inhibitors. Also called Triapine®.

3-D  
   3-dimensional. A graphic display of depth, width, and height.

3-dimensional  
   3-D. A graphic display of depth, width, and height.

3-dimensional conformal radiation therapy  (ray-dee-AY-shun)
   A procedure that uses a computer to create a 3-dimensional picture of the tumor. This allows doctors to give the highest possible dose of radiation to the tumor, while sparing the normal tissue as much as possible. Also called 3-dimensional radiation therapy.

3-dimensional radiation therapy  (…ray-dee-AY-shun…)
   A procedure that uses a computer to create a 3-dimensional picture of the tumor. This allows doctors to give the highest possible dose of radiation to the tumor, while sparing the normal tissue as much as possible. Also called 3-dimensional conformal radiation therapy.

4-demethoxydaunorubicin  
   A drug that is used in the treatment of cancer. It belongs to the family of drugs called antitumor antibiotics. Also called idarubicin.

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 topical form of 4-hydroxytamoxifen is being studied in breast cancer screening.

4-nitroquinoline 1-oxide  
   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 prevention and treatment.

4-NQO  
   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 prevention and treatment.

5-FU  
   A drug that is used in the treatment of cancer. It belongs to the family of drugs called antimetabolites. Also called fluorouracil.

5-hydroxyindoleacetic acid  
   5HIAA. A breakdown product of serotonin that is excreted in the urine. Serotonin is a hormone found at high levels in many body tissues. Serotonin and 5HIAA are produced in excess amounts by carcinoid tumors, and levels of these substances may be measured in the urine to test for carcinoid tumors.

5-hydroxytryptamine  
   A hormone found in the brain, platelets, digestive tract, and pineal gland. It acts both as a neurotransmitter (a substance that nerves use to send messages to one another) and a vasoconstrictor (a substance that causes blood vessels to narrow). A lack of 5-hydroxytryptamine in the brain is thought to be a cause of depression. Also called serotonin.

506U78  
   A substance that is being studied in the treatment of cancer. It belongs to the family of drugs called antimetabolites. Also called nelarabine.

5Q- syndrome  
   5Q minus syndrome. A rare disorder caused by loss of part of the long arm (Q arm) of human chromosome 5. This syndrome affects myeloid (bone marrow) cells, causing treatment-resistant anemia, and myelodysplastic syndromes that may lead to acute myelogenous leukemia.

6-hydroxymethylacylfulvene  
   A substance that is used in the treatment of cancer. It belongs to the family of drugs called alkylating agents. Also called irofulven.

9-cis retinoic acid  
   A substance that is being studied in the prevention of cancer. It belongs to the family of drugs called retinoids.

90Y-DOTA-biotin  
   A radioactive substance (yttrium-90) joined by a large chemical link (DOTA) to biotin, a vitamin.

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