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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Leaders of Wales, Scotland and Northern Ireland meet in Downing Street for talks with Theresa May ahead of Britain's departure from the EU
The prime minister has offered Scotland, Wales and Northern Ireland a "direct line" to Brexit Secretary David Davis.
22-year-old Ify Iwobi has been making music since the age of seven.