A 1-day-old baby boy's heel is pricked for blood during a newborn screening to detect phenylketonuria (PKU) and many other disorders at Washington Hospital Center in Washington, Friday, Feb. 5, 2010. A critical safety net for babies _ that heelprick of blood taken from every newborn _ is facing an ethics attack. States increasingly are storing the leftover blood samples for later medical research, often without parents' knowledge or consent _ prompting lawsuits in two states and work in many others to give parents a greater say. (AP Photo/J. Scott Applewhite)

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