Fig. 1

Immunosuppressive potential of different cell types found in hUCB. a Proliferative response of human PBMCs stimulated with PMA and ionomycin in the presence or absence of hUCB mononuclear cells at different hUCB to PBMC ratios. b Proliferative response of human PBMCs stimulated with PMA and ionomycin in the presence or absence of different cell types found in hUCB added at a ratio of 1:10 of hUCB cells to PBMCs. (n = 3 PBMC donors with a minimum three pooled hUCB cell donors, all performed in triplicate, **P < 0.001, *P < 0.05 compared to PBMC alone)