1. College of Life Science; Jilin University; Changchun China
2. Key Laboratory of the Ministry of Health for Research on Quality and Standardization of Biotech Products, Division of HIV/AIDS and Sex-Transmitted Virus Vaccines; National Institutes for Food and Drug Control (NIFDC); Beijing China
3. Key Laboratory of Ministry of Health for Research on Quality and Standardization of Biotech Products, Cell Collection and Research Center; National Institutes for Food and Drug Control (NIFDC); Beijing China