A team of researchers at Cardiff University has discovered stem cells in the cheek can be used to supress the immune system. It should help patients with certain types of diabetes, and those whose bodies reject organs after transplants.
It'll be several years before a treatment's developed but the scientists say it's a real breakthrough.
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Euro 2016 fans are having a whip-round for Dean Saunders' hefty short-stay parking bill - because he didn't think Wales would get this far.
As Wales prepare to meet Belgium on Friday we take a look back at how the two teams have stacked up against each other over the years.
Police officers who deliberately hit and killed a loose dog on the A55 were justified in their actions, an independent review has found.