MK morphology and ploidy after 15 days of culture. (A,B) Representative photomicrographs demonstrating the morphology (100 ×/0.75 NA oil objective, Olympus BH-2 microscope, Nikon digital sight DS-L1 camera) of normal and IMF MKs generated from CD34⁺ cell cultures after 15 days of incubation. (C,D) demonstrate DNA content of CD41⁺ cells generated from a representative sample of normal and IMF CD34⁺ cells as determined flow cytometrically.