Figure 4

Clonogenic growth efficiency of CD34-positive cells obtained from the CB of 44 preterm or 24 full-term infants. Formation of burst-forming unit-erythroid (BFU-E) or colony-forming unit-granulocyte-monocyte (CFU-GM) was assessed in clonogenic in vitro assays. Colony counts are expressed in absolute values per 2 × 10⁴ plated cells and represent the median [min–max] from all the performed assays in each group. ***p < 0.001 for comparison between preterm and full-term infants (Mann–Whitney test).