Second-degree burn wound after two days of healing. Phot by Cjr80 via Wikimedia Commons A topical gel formulation of 4-aminopyridine (4-AP) for the treatment of burn wounds has achieved near-complete closure within 21 days in animal models. The findings were published in the journal Biomaterials. Researchers at the Terasaki Institute for Biomedical Innovation and the University of Arizona College of Medicine have developed the new formulation. The medication is best known und