Fig. 1.

Identification of human WJ-MSCs and the schematic design for the differentiation of WJ-MSCs into WJ-SCLCs. A Flow cytometry of WJ-MSCs for CD34, CD45, CD73, and CD105. B Light microscopy images of the MSCs during differentiation, which was induced in three steps: induction 1 (1 mM β-ME), induction 2 (35 ng/ml retinoic acid), and induction 3 (10 µM forskolin, 400 ng/ml heregulin-β, 5 ng/ml PDGF, and 10 ng/ml β-FGF). Scale bar = 50 µm