blood heals old muscles
...al muscle cells of injured individuals increased expression of Delta, a surface protein. The opposite was true for skeletal muscle cells of older muscle tissue. If skeletal muscle stem cells in older muscle tissue were encouraged to express Delta protein, this muscle tissue would be able to effectively regenerate itself. Experimenters agreed that if the environment of the old muscle was changed, the that old muscle may carry out its ability to regenerate. This brought about a test involving mice which were connected by vascular anastamoses. When two young mice were joined together, muscle regeneration was normal. When two old mice were paired together, regeneration of muscle tissue was very poor. Interesting enough, when one old mouse and one young mouse was joined, the regeneration of the old muscle tissue was greatly improved. It was proven that regeneration o...