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Fig. 6. Nkx6 compound mutants do not show a block in terminal differentiation of pancreatic endocrine cells. Immunofluorescence detection of IAPP (A-D), ISL1 (E-H) and PAX6 (I-L) in pancreas from wild-type, Nkx6.2-/-, Nkx6.1-/- and Nkx6.1-/-;Nkx6.2-/- embryos at E18.5. The number of IAPP+, ISL1+ and PAX6+ cells was similar in wild type (A,E,I) and Nkx6.2-/- (B,F,J) embryos, reduced in Nkx6.1-/- (C,G,K) and further decreased in Nkx6.1-/-;Nkx6.2-/- embryos (D,H,L), reflecting the gradual loss of {alpha}- and ß-cells in Nkx6 mutants. Scale bar: 50 µm.





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