A kidney donor is wheeled to an operating room for a transplant at Johns Hopkins Hospital in Baltimore in late June. Brendan Smialowski/AFP/Getty Images hide caption

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A Beechcraft airplane sprays insecticide over Dallas early Monday morning to curb the spread of West Nile virus. LM Otero/AP hide caption

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With West Nile On The Rise, We Answer Your Questions

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People wait in line at the Durham County Health Department for the H1N1 flu vaccination in Durham, N.C., in November 2009. Gerry Broome/AP hide caption

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Top Doctors Discuss The Art And Craft Of Surgery

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A PET scan of the brain of a person with Alzheimer's disease. U.S. National Institute on Aging/Wikimedia Commons hide caption

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Ashley Beecher, 29, and her daughters Annie (on lap) and Charlie. After feeding Annie, Beecher donates her extra supply to the human milk bank at Texas Children's Hospital. KUHF hide caption

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NIH Takes Extraordinary Steps In Fighting 'Superbug'

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Childhood obesity is on the rise in many countries and overuse of antibiotics is now on the radar as a possible factor in the epidemic. Here 18-month-old twins are weighed in a nutritionist's office in Colombia. Raul Arboleda/AFP/Getty Images hide caption

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Radiologist Gerald Iba checks mammograms at The Elizabeth Center for Cancer Detection in Los Angeles in May 2010. Damian Dovarganes/AP hide caption

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Dr. Amit Etkin and a research assistant help a participant into the bore of the MRI. Courtesy of the Etkin Lab at Stanford University hide caption

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PTSD Isn't Just A War Wound; Teens Suffer, Too

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Working Towards A Universal Flu Vaccine

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