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Histological analysis of Crk−/− embryos. Wild-type and Crk−/− embryos at E12.5 (A and B) and E15.5 (D, E, and F) were embedded in paraffin, and sagittal sections were obtained at a thickness of 5 μm. (C) High magnification of the focal edema (blue arrowheads) in panel B. (E and F) Arrows indicate aberrant accumulation of blood cells.
