1. Department of Histology and Embryology, Sanquan College of Xinxiang Medical University, Xinxiang, Henan 453003, China
2. Experimental Teaching Center of Biology and Basic Medicine, Sanquan College of Xinxiang Medical University, Xinxiang, Henan 453003, China
3. Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan 453003, China
4. The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, China