Frequency distribution of sensitivities to PEG-rHu MGDF.

Histogram showing frequency distribution of sensitivities to PEG-rHu MGDF (concentration in ng/mL at 1/2 max colony number) of megakaryocytic progenitor cells in 3 conditions: normal, secondary (reactive) thrombocytosis (2°T), and ET. (Note that the point on the abscissa designated as 0.16 ng/mL actually represents a cytokine concentration of ≤ 0.16 ng/mL).