About the Authors

Yun Liu

Contributed equally to this work with: Yun Liu, Lulu Chen

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Lulu Chen

Contributed equally to this work with: Yun Liu, Lulu Chen

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Chunchun Zhi

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Ming Shen

Affiliation Institute of Stomatology, Nanjing Medical University, Nanjing, China

Weiwei Sun

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Dengshun Miao

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Xiaoqin Yuan

yuanxq@njmu.edu.cn

Affiliation Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XY DM. Performed the experiments: YL LC CZ. Analyzed the data: LC WS MS. Contributed reagents/materials/analysis tools: YL CZ MS. Wrote the paper: XY DM.