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Fig. 4. Impaired cell movement in the endoderm of
Mixl1GFP/GFP mutant embryos. (A,B) The
displacement of DiI-labeled endoderm (yellow because of overlaying of red dye
color on the green fluorescence) in Mixl1+/GFP (A) and
Mixl1GFP/GFP (B) mutant embryos after 1-, 6-, 12- and
24-hours of in vitro culture. (C,C') Summary of the
distribution of DiI-labeled endodermal cells along the anterior-posterior axis
of the embryos and in the posterior yolk sac 24 hours after labeling. Each bar
represents the pattern of distribution of labeled cells in a single
representative embryo after the endoderm overlying the anterior (C) or the
posterior (C') region of the primitive streak was painted.