Tendons, ligaments and bones could be engineered for accident victims or to cure diseases such as leukemia.

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Some leukemias, such as acute lymphocytic leukemia in children, have very high cure rates.

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Some drugs, such as Gleevec, a treatment for a rare form of leukemia developed by Novartis (nyse: NVS - news - people ), can actually change the way a disease is treated.

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Oncology is attractive not only because of the huge need for better drugs but also because that's where the impact of the human genome project has been greatest, yielding targeted drugs such as Genentech's Herceptin for breast cancer and Novartis' Gleevec for chronic myeloid leukemia.

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For example, a high percentage of cats begin to develop symptoms of autoimmune disease such as hyperthyroid disease, inflammatory bowel disease, lupus, rheumatoid arthritis or cancer or feline leukemia and die when they are about 11 to13 years old or even before.

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Ephron, who died of leukemia last summer at age 71, gained fame as the writer of films such as "You've Got Mail" and "Sleepless in Seattle, " which both also starred Hanks.

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