Fig. 4.
Hydroxyurea effects on absolute globin mRNA levels in primary human adult erythroid cultures.
The effect of 40 μmol/L hydroxyurea on (A) the levels of β-globin message, (B) the levels of γ-globin message, and (C) fractional γ-globin message content are shown. Untreated controls are shown as solid bars, while hydroxyurea-treated samples are shown as hatched bars.