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Fig. S2 The hindbrain patterning phenotype is not affected by a p53 morpholino. (A-D) Embryos injected with either control morpholino (Ctrlmo) (A; n=12) or Spry4mo (B; n=19), and embryos co-injected with p53 morpholino and Ctrlmo (p53mo+Ctrlmo) (C; n=12) or Spry4mo (p53mo+Spry4mo) (D; n=20) were collected at the 10-somite stage and subjected to in situ hybridisation for krox20 and her5. Embryos were flat-mounted with anterior to the left. (E) Quantitative evaluation of rhombomere areas was carried out as described in Fig. 2. *, not significant after Bonferroni corrections considering eight comparisons, P>0.006; **, P<0.006; ***, P<0.0001; t-test. Errors bars indicate s.e.m.