It has been found that placental alkaline phosphatase interacts synergistically with growth factors and corresponding serum factors to stimulate the proliferation of adult fibroblast cells. Furthermore, this stimulation of fibroblast proliferation does not result in a corresponding stimulation of collagen...http://www.google.com.au/patents/US7011965?utm_source=gb-gplus-sharePatent US7011965 - Compositions and methods for stimulating wound healing and fibroblast proliferation