Fig. 4From: Human CD133-positive hematopoietic progenitor cells enhance the malignancy of breast cancer cellsCD133+ HPCs enhances breast cancer cell invasion in vitro. The Transwell assay was conducted and the invasive breast cancer cells were stained, photoimaged and counted. a A representative image of the invasive cells (magnification × 400). b Quantitative analysis of invasive cells. *P < 0.05, compared with CD133- HUCBCs groupBack to article page