Ovarian tissue containing hundreds of small resting eggs is prepared to be transplanted back after cancer treatment. Courtesy of Claus Yding Andersen hide caption

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For best quality of life, many cancer patients who can't be cured might do best to forgo chemo and focus instead on pain relief and easing sleep and mood problems, a survey of caregivers suggests. iStockphoto hide caption

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Anne Koller closes her eyes as an oncology nurse attaches a line for chemotherapy to a port in her chest. Koller typically spends three to six hours getting each treatment. Sarah Jane Tribble/WCPN hide caption

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Scott Peterson/One Bite at a Time/Celestial Arts

Dr. Jame Abraham used positron emission tomography, or PET, scans to understand differences in brain metabolism before and after chemotherapy. Dr. Jame Abraham hide caption

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The number of new drug shortages each year in the U.S., from 2001 through Dec. 21, 2012. University of Utah hide caption

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The white arrows in these two tumor samples point to a subset of tumor cells that are in a resting state. Nature hide caption

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