Scientists have regrown missing frog legs using a five-drug cocktail – and they aim to test their technique on mammals next. On adult frogs, which are naturally unable to regenerate limbs, the team triggered leg regrowth using the drugs, applied in a silicone wearable attached to wounds.Over the course of 18 months, the frogs had 'almost fully functional' limbs restored, including boneless toes, which they used to help them swim.
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