 When she tried in 2017 to withdraw the cells for a clinical trial to treat her son's cerebral palsy, this is, by the way, another condition for which there is a little scant evidence that maybe injecting these stem cells will somehow regenerate the brain, but it's early on. We're not sure that that is going to happen in the current decade. She tried in 2017 to withdraw the cells for a clinical trial to treat her son's cerebral palsy. She learned that the company had found bacteria in the sample within weeks of receiving it.