1 Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.
2 Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institutes of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA. keisuke.nagao@nih.gov.