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Fig. 4. Analysis of cell death in Wnt1-/-,
En1-/- and Fgf8 MHB KO mutants. (A-C) Dorsal
views of control and mutant embryos of the genotypes indicated, stained in
whole mount with NBS. Schematic diagrams and arrowheads are as described in
Fig. 3. In C, note that the
midbrain appears partially truncated in the En1-/- embryo,
mostly deleted in the Wnt1-/- embryo, and completely
absent in the Fgf8 MHB KO embryo (indicated by half pink, half green
arrowhead). *, partial deletion; Fb, forebrain; Hb, hindbrain; Mb,
midbrain.