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Fig. 6. Pancreatic defects in E17.5 Smad2 mutant embryos. (A,E)
Ngn3 expression (blue) detected by antisense RNA in-situ
hybridization. (B,F) NKX2.2 expression (brown nuclei) adjacent to ductal
epithelium. (C,G) NKX6.1 expression (brown nuclei marked by arrows). (D,H)
Insulin expression (green) detected by IHC and confocal microscopy. Inset, H:
NGN3+ nuclei (red) adjacent to insulin+ cells (green).
Images are representative of four or more animals per genotype.