Morphologic cell features in β-thalassemic erythropoiesis. Morphology of erythroid cells generated in HPC unilineage erythroid cultures from one representative β-TI patient (left panels) and one representative β-TM patient (right panels), supplemented or not with KL and KL plus Dex. Cytocentrifuged cells have been stained with May-Grünwald Giemsa and then analyzed by an Eclipse 1000 optical microscope (Nikon, Tokyo, Japan; 400×/1.30 NA 40× objective). Images were acquired with a Nikon DXM 1200 camera using ACT-1 software (Nikon).