Also, an Effective but Expensive Treatment for Macular Degeneration

AP - A Merck & Co. Inc. drug received federal approval Friday to treat a slow-growing cancer that affects infection-fighting white blood cells.

Reuters - Stomach-stapling surgery to combat obesity may be done in the future with a tube inserted through the mouth, making the procedure safer than using an incision and opening the way for more people to undergo it, doctors say.