Preclinical transplantation and safety of HS/PCs expanded from human umbilical cord blood

Figure 1 Serum-free co-culture system improves the proliferation of hematopoietic/progenitor stem cells. A: the in vitro expansion kinetics of hematopoietic/progenitor stem cells (HS/PCs) in three culture systems between day 0 and day 5; B: The in vitro expansion kinetics of HS/PCs in three culture systems between day 5 and day 10; C: The ratio of CD34⁺ cells in the mononuclear cells (MNCs) before expansion; D: The ratio of CD34⁺ cells in the MNCs after expansion in the serum-free co-culture system; E: The expansion of granulocyte-macrophage colony-forming cells (GM-CFCs) and erythroid colony-forming cells (E-CFCs) before and after expansion. ^aP < 0.05. TNCs: Total nuclear cells.