Off-the-shelf skin replacements are on their way…

UK scientists in artificial skin breakthrough: “A long-lasting artificial skin has been developed by British researchers. The Cambridge-based Intercytex Group Plc has announced that tests had produced promising results in healing wounds in early clinical trials…. ICX-SKN is created from a matrix produced by the same skin cells that are responsible for synthesising new tissue in the body. Results show that the new skin had produced a closed and healed wound site after just 28 days.”

skinreplacementICX-SKN

Questions: exactly what skin cells and what matrix?
What is the maximal wound area that could be healed with ICX-SKN?