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Scientists in the US have found a way to regenerate dead brain cells in stroke victims and these injections are allowing patients to walk and talk again. Professor Gary Steinberg, chief of neurosurgery at Stanford University and the lead study author, he's been telling Â鶹Éç Newsday how they carried out the research. (Caption: This is photo of a man on his own, as almost half of people who have survived a stroke often feel abandoned when they leave hospital. Dominic Lipinski/PA Wire)