Cold caps tested to prevent hair loss during chemo
 

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Eric Risberg / AP In this Wednesday, July 10, 2013, photo, Dr. Hope Rugo, right, an oncologist and breast cancer specialist, demonstrates the use of the Dignitana DigniCap system on Katherine Serrurier, a research assistant and pre-medical intern, at the University of California San Francisco Mount Zion Hospital cancer center in San Francisco. The caps chill the head and scalp allowing for hair preservation in chemo treatments. (AP Photo/Eric Risberg)