Nan Qin1, Hehe Sun1, Meike Lu1, Jianhui Wang2, Ting Tang1,3* and Fengsong Liu1,3* 1The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding, China 2Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA 3Institute of Life Science and Green Development, Hebei University, Baoding, China ↵*For correspondence: Ting Tang, tangting{at}hbu.edu.cn; Fengsong Liu, liufengsong{at}hbu.edu.cn.