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Fig. 3. NCCs develop in BMPRIA NCC mutant embryos. (A,C,E) Wild-type, stage-matched
control embryos for Wnt1-Cre; Bmpr1aflox/null mutants
(B,D,F). (A,B) Expression of Crabp1 and other neural crest markers
showed normal NCC specification in mutants. (C,D) Immunostaining for
neurofilaments with the 2H3 antibody showed proper differentiation of NCCs in
mutants. (E,F) Mutant embryos expressing the R26R reporter, to label
NCCs, show a normal distribution of NCCs and proper formation of many target
tissues, including pharyngeal arches (arrows) and dorsal root ganglia
(arrowheads).