May-Grünwald-Giemsa (MGG) staining of hematopoietic cord blood cells during MK maturation.

Day 0 corresponds to the day of CD34⁺ cell isolation. These cells were then cultured under conditions optimized for MK growth and maturation (see “Materials and methods”) and analyzed on days 0, 6, 9, and 13 of culture. MGG was performed as described by Löffler.44