Activated regulatory T cells are increased in patients with alopecia areata for suppressing disease acitivity. Issue 2 (May 2017) - Kubo, Ryoji; Muramatsu, Shinnosuke; Sagawa, Yoko; Saito, Chiyo; Kasuya, Saori; Nishioka, Akiko; Nishida, Emi; Morita, Akimichi