The effect of HUCBSCs on the <i>in vitro</i> proliferation of cord blood CD34⁺ cells.

<p>3-A: Culture of CFU-GM from human cord blood CD34⁺ cells. 3-B: Culture of BFU-E from human cord blood CD34⁺ cells. 3-C: Culture of CFU-Meg from human cord blood CD34⁺ cells. 3-D: Comparison of numbers of colonies in the three groups. * compared with control group, P<0.01; ** compared with control and HUCBSCs groups, p<0.01.