(Via Newswire Today!). One possibly viable alternative to stem cell based regenerative medicine is to alter the local biochemical environment to stimulate healing that would not normally take place: "The main finding of our study is that you can deliver growth factors to the environment around injected cells using nanofibers ... Most past studies inject proteins directly into tissues like the heart. Many proteins delivered this way don't stay in the tissue very long. Our new technology allows the growth factor to be delivered for many weeks in a highly controlled way ... We think this is just the beginning of how we can design the local environment around cells to encourage them to do things that can help the injured tissue. We just delivered one factor, but there's no reason you can't deliver many factors that are needed."