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Fig. 1. Brain and body axis defects in had mutants. (A,B) Live wild-type
(left) and had mutant (right) embryo. The body axis is normal in
had mutants at 24 hpf (A) but becomes curly by 48 hpf (B). (C,F) By
24 hpf, the boundary of midbrain and hindbrain is distinctive in wild-type
embryos (C, arrow), but not had mutants (F, arrow). (D,G) Twoday-old
wild-type (D) and had mutant embryos (G). Note that twoday-old
had mutant has developed edema. (E,H) pax2 expression
pattern in wild-type (E) and had mutant (H) embryos at 24 hpf.