Kinetics of cell surface protein expression.

Kinetics of CD34, CD15, and CD38 (A) and GPIbα, GPIX, GPV, and GPIIb-IIIa (B) surface expression during MK differentiation of CD34⁺ cells. Cells were harvested at different time intervals and the percentages of cells positive for the different markers were determined by flow cytometry after double labeling (Figure2). Values are the means ± SEM of 5 separate experiments.