In yet another new 'first' for stem cell companies, ReNeuron says that it dosed the first patient in a small stroke study, with an elderly patient on the receiving end of a series of stem cell injections in the brain. It's the first such clinical trial in the world. "In this trial, we are seeking to establish the safety and feasibility of stem cell implantation, which will require careful follow-up of the patients who take part," said Professor Keith Muir. Investigators plan to treat a dozen people with ReNeuron's neural stem cells, which are extracted from fetuses. Story