1. Beijing Engineering Research Center for BioNanotechnology & Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; No. 11 Zhongguancun Beiyitiao Beijing 100190 China
2. University of Chinese Academy of Sciences; Beijing 100049 China
3. College of Veterinary Medicine; China Agricultural University; Yuanmingyuan West Road 2 Beijing 100193 China
4. Institute of Antibiotic, Huashan Hospital; Fudan University; Shanghai 200040 China