Concentration-dependent inhibition of CFU-G/M/GM formation on exposure of hematopoietic progenitors to toxic chemicals. hESC-derived cells, hESCs-derived CD34⁺C-Kit⁺ hematopoietic progenitors; cord blood-derived cells, cord blood-derived CD34⁺ hematopoietic progenitors. Error bars indicate mean ± SEM (n = 3). Each sample was in triplicate. The relative colony numbers were normalized to DMSO-treated control samples. Adriamycin represents doxorubicin; and Taxal, paclitaxel.