found that in psoriatic skin lesions, intravenous administration of HGF-transduced dental pulp stem cells (HGF-DPSCs) in mice (2 × 106 cells) can ameliorate psoriasis-like erythema, scaling, and thickening and the expression of cytokeratin 6 (CK6) and cytokeratin 17 (CK17). This evidence concerns the gene HGF and Erythema.