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. 2011 Feb 1;25(3):251–262. doi: 10.1101/gad.2009211

Figure 1.

Figure 1.

Hematopoietic specification occurs without functional ERG. The number and class of CFU-Cs present in E8.5 embryo proper (EP) (A) and E8.5 YS (B). (C) Sagittal section through an E9.5 embryo stained with hematoxylin and eosin (original magnification, ×50). Inset is a high-magnification (×400) enlargement of the boxed region demonstrating the presence of primitive erythroid cells passing through the umbilical cord between the placenta and embryo proper. The number and class of CFU-Cs present in E9.5 para-aortic splanchnopleura (P-Sp) (D) and E9.5 YS (E). Data are cumulative of five independent experiments. (BFU-E) Burst-forming unit-erythroid; (GM) CFU-granulocyte/macrophage; (Mast) CFU-Mast; (Mac) CFU-macrophage; (EryP) CFU-primitive erythroid.