1 Biomedical Pioneering Innovation Center, Beijing Advanced Innovation Center for Genomics, School of Life Sciences, Peking University, Beijing, China.
2 Biomedical Pioneering Innovation Center, Beijing Advanced Innovation Center for Genomics, School of Life Sciences, Peking University, Beijing, China. tangfuchou@pku.edu.cn.
3 Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, Beijing, China. tangfuchou@pku.edu.cn.
4 Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China. tangfuchou@pku.edu.cn.