Health_Medical_Pharma

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In this photo taken June 23, 2010, a facial prosthetic with an artificial eye is seen in a facial prosthetics lab at Wilford Hall Medical Center in San Antonio, Texas. (AP Photo/Eric Gay)

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In this photo taken June 23, 2010, Dr. Joe Villalobos works on an artificial ear for Master Sgt. Todd Nelson in in a facial prosthetics lab in San Antonio. (AP Photo/Eric Gay)

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In this photo taken June 23, 2010, a facial prosthetic and artificial eyes are seen in a facial prosthetics lab at Wilford Hall Medical Center in San Antonio. (AP Photo/Eric Gay)

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In this photo taken June 23, 2010, prosthetics are seen in a facial prosthetics lab at Wilford Hall Medical Center in San Antonio, Texas. (AP Photo/Eric Gay)

Oscar,center, a man who underwent a full-face transplant in April, poses beside Dr. Joan Barret, fourth from left, and surrounded by doctors as he appears in public for the first time in a news conference at the Vall d'Hebron Hospital in Barcelona, Spain, Monday, July 26, 2010. A 30-member medical team led by the Spanish doctor Juan Barret carried out a full-face transplant, giving a young man who lost his in an accident a new nose, skin, jaws, cheekbones, teeth and other features. (AP Photo/David Ramos)

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A German shepherd receives chemotherapy from Dr. Allyson Berent at the Animal Medical Center of New York. Veterinarians across the nation are practicing more advanced medicine on animals, and many pet owners are willing to make the investment. (Associated Press)

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A U.N. Command soldier keeps a watchful eye on a North Korean soldier peering in through a window as U.S. Army Col. Kurt Taylor briefs Secretary of State Hillary Rodham Clinton and Defense Secretary Robert M. Gates on Wednesday. (Associated Press)

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"With this heart comes responsibility. My donor heart could have gone to anyone, and I want to make sure my life was worthy of being saved," Kelly Perkins said. "With this in mind, I share my vitality with others in the hopes it will change the perception of organ donation and 'move' them to participate." (Associated Press)

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"I always believed in all the treaties that I've been involved in, in the past 28 years, General, that cheating does matter and it does have an effect. And to say that it has little if any effect, then we've been wasting a lot of time and money on negotiations," Sen. John McCain said. (Associated Press)

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U.S. Secretary of Defense Robert Gates waves as he departs after meeting with soldiers during a stop at Camp Casey on July 20, 2010 in Seoul, South Korea. Mr. Gates greeted troops from the 1st Heavy Brigade and the 210 Fires Brigade and presented each one with a Secretary of Defense challange coin. (AP Photo/Mark Wilson, pool)

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Former Sen. Gary Hart, Colorado Democrat who twice ran for president, is pictured in 2003. (Associated Press) ** FILE **

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Associated Press BEARING DOWN: Former Alaska Gov. Sarah Palin has endorsed the opponent of fellow "grizzly mama" Sen. Lisa Murkowski.

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Special Forces Capt. Nathaniel Renko watches a soldier fight a mutant in Activision's first-person shooter Singularity.

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Associated Press AILING: Egyptian President Hosni Mubarak is thought to be dying from terminal cancer affecting his stomach and pancreas.

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Tea Party Express leader Mark Williams addresses a crowd March 30 in Salt Lake City. A spokesman for the National Tea Party Federation on Sunday said the organization has expelled the Tea Party Express from its ranks for refusing to oust Mr. Williams after he posted a blog that satirized the NAACP and referred to its president, Benjamin Jealous, as "Tom's nephew and NAACP head colored person."