(AP) -- Kimberly Lindsey marvels that her 3-year-old son Merrick doesn't need to take 10 different medicines anymore. He can safely frolic on the playground among the germs that lurk there.
(AP) -- Kimberly Lindsey marvels that her 3-year-old son Merrick doesn't need to take 10 different medicines anymore. He can safely frolic on the playground among the germs that lurk there.