**Psoriasis and Stem Cells**

Kaiming Zhang, Guohua Yin, Xinhua Li, Xuping Niu, Ruixia Hou, Ruifeng Liu and Junqin Li *Taiyuan City Central Hospital Affiliated to Shanxi Medical University, 1 Dong San Dao Xiang, Taiyuan, Shanxi Province, China* 
