Nature 468, 659–663 (2010)

In this Article, Figs 1f and 2e appeared incorrectly (the corrected figure parts are shown below). In Fig. 1f, the y-axis of the CLP graph should read “Cells (×102)” and the y-axis of the CMP graph should read “Cells (×103)”. In Fig. 2e, the control bar should be grey, not black.

Figure 1
figure 1

This is the updated Fig. 1f and Fig. 2e.