Extracts from the birch tree have served for centuries as a traditional means of helping the damaged skin around wounds to regenerate more quickly. Prof. Dr. Irmgard Merfort from the Institute of Pharmaceutical Sciences of the University of Freiburg and her team have now explained the molecular mechanism behind the wound-healing effect of an extract from the outer white layer of the tree's bark. The scientists published their findings in the journal Plos One. The team cooperated with several other departments and institutes, such as a research group from the Institute of Molecular Medicine and Cell Research and the Institute of Experimental and Clinical Pharmacology of the University of Freiburg as well as a research group from the Dermatological Clinic of the University of Hamburg.
Ref : http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0086147