In the L.A. Times on May 1st, in a paper published in the journal Science Translational Medicine, it reported that:
Researchers at the University of Pittsburgh say the implantation of so called extracellular matrix into patient’s legs prompted new muscle to grow by drawing the body’s own tissue creating stem cells to the site.
As a result three of the five patients saw at least a 20% increase in strength and a 25% improvement in functionality six months after the surgery, according to the report.
…the solution is to recruit stem cells from the patient’s own body where they can pick up on chemical signals sent by distressed cells nearby.
Study authors say this is where the pig-derived extra-cellular matrix, or ECM, comes into play.
The article did not mention A-Cell by name, but this sounds like it.