CJCP     2011 13 (6):  482-486    ISSN: 1008-8830  CN: 43-1301/R Changes of regulatory T cells and T helper cells in peripheral blood and their roles in the severity evaluation in children with asthma YANG Yan-Li, PAN Yu-Qin, HE Bang-Shun, ZHONG Tian-Ying Clinical Laboratory, Nanjing Children's Hospital Affiliated to Nanjing Medical University, Nanjing 210009, China. zhongtianying@yahoo.com Received: null  Revised: null  Online: null Supporting info