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. 2011 Nov 1;138(21):4801–4812. doi: 10.1242/dev.070912

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Fig. 7. — Genetic fate-mapping studies in the Er71 mutant show that the affected lineages give rise to myocardium in vivo. (A,F) Whole-mount images of Rosa-EYFP expression in Er71 wild-type (A) and mutant (F) mouse embryos. The red line indicates the plane of sectioning for the corresponding panels. (B,C,G,H) Immunohistochemical analysis of EYFP and Nkx2-5 shown at low (B,G) and high (C,H) magnification. (D,E,I,J) Immunohistochemical analysis of EYFP and desmin (D,I) or troponin T (E,J) expression. ys, yolk sac; h, heart; al, allantois; da, dorsal aortae; ec, endocardium; mc, myocardium. Arrowheads indicate EYFP colocalization with desmin or troponin T. Scale bars: 200 μm in A,F; 20 μm in B-E,G-J.