UVB-Expanded Skin Treg Cells Promote Wound Healing (IMAGE) Nagoya City University Caption UVB irradiation induces proliferation and activation of skin Treg cells. UVB-expanded skin Treg (UVB-skin Treg) cells promote wound healing by producing enkephalin and amphiregulin(AREG), which enhance keratinocyte growth/proliferation to repair skin wound. Credit Department Immunology, Nagoya City University Graduate School of Medical Sciences Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.