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Scientists in Australia have grown the world's first kidney from stem cells - a tiny organ which could eventually help to reduce the wait for transplants. The breakthrough, published in the journal Nature Cell Biology, followed years of research and involved the transformation of human skin cells into an organoid - a functioning "mini-kidney" with a width of only a few millimetres.

An MRI scan showed a cluster of what appeared to be lesions in his brain, but specialists were baffled as to the cause. And they were more surprised to find that the lesions kept moving. Brain scans over the next four years showed that the anomaly had travelled at least 5cm through the tissue.

But scientists from the University of Southern California showed that, in mice, the Fasting Mimicking Diet (FMD) significantly lowered the percentage of damaging immune cells, while allowing the protective coating to regrow.

Sheffield Support Dogs is the only charity in the UK to train seizure alert dogs. Each one costs £10'000 to train, which is raised entirely through donations.