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In this Friday, Jan. 14, 2011 photo, Dr. Marty Tenenbaum, a survivor of the skin cancer melanoma, shows off his free app on his iPad in his Palo Alto, Calif., office. Tenenbaum, 67, is launching a free app with Cancer Commons, a set of online tools that help professionals study the disease and help with better treatments. (AP Photo/Paul Sakuma)
Photo by: Paul Sakuma
In this Friday, Jan. 14, 2011 photo, Dr. Marty Tenenbaum, a survivor of the skin cancer melanoma, shows off his free app on his iPad in his Palo Alto, Calif., office. Tenenbaum, 67, is launching a free app with Cancer Commons, a set of online tools that help professionals study the disease and help with better treatments. (AP Photo/Paul Sakuma)

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