Last week, the Texas Medical Board signed off on what's said to be the first state-level policy imposing oversight on experimental treatments using adult stem cells. The scientific community has mixed views on whether this is a good way to raise standards. Some experts say the rule will allow unscrupulous doctors to avoid U.S. Food and Drug Administration reviews. But others say it's a good-faith effort to bring oversight to controversial treatments that clinics around the world offer for diseases including arthritis and multiple sclerosis.
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