Fig. 1

Transient loading kinetics of CD34⁺ HPCs demonstrated as median fluorescence intensity (FI) obtained by flow cytometry. CD34⁺ HPC cultures were exposed to 50 µg/ml of 40 (a), 100 (b) or 200 nm (c) PS NPs and measured up to 6 h. Data of HPC cultures obtained from 3 different cord blood samples are shown