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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A memorial service to mark the 20th anniversary of Srebrenica genocide is to be held at the Senedd later today.
The Caernarfon Search and Rescue helicopter service launch marks the final stage of a shift of services away from RAF Valley on Anglesey.
The Ashes clash between England and Australia begins in Cardiff this morning. The Test is expected to bring in £5m for the Welsh economy.