1. Key Lab of Molecular Epigenetics of MOE and Institute of Genetics and Cytology Northeast Normal Univ. Changchun130024China
2. Dep. of Biology Duke Univ. DurhamNC27708
3. School of Environment Northeast Normal Univ. Changchun130024China
4. The 3rd High School of Liupanshui Liupanshui553000China