Isern J, He Z, Fraser ST, et al. Single-lineage transcriptome analysis reveals key regulatory pathways in primitive erythroid progenitors in the mouse embryo. Blood. 2011;117(18):4924–4934.

On page 4933 in the 5 May 2011 issue, an edit was made in copyediting that changed the meaning of a sentence. In “Discussion” in the third sentence of the first paragraph under the heading, “EryP progenitors, hypoxia, and the Warburg effect,” the text reads, “It is intriguing that the transcriptome of EryP progenitors revealed a signature generally associated with cancer and other rapidly proliferating cells, which catabolize glucose aerobically and produce high levels of lactate in the cytosol, rather than using the more energy-efficient mitochondrial pathway known as the ‘Warburg effect.’^23,24” The sentence should have read, “It is intriguing that the transcriptome of EryP progenitors revealed a signature generally associated with cancer and other rapidly proliferating cells, which catabolize glucose aerobically and produce high levels of lactate in the cytosol (the “Warburg effect”^23,24), rather than using the more energy-efficient mitochondrial pathway.”