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Fig. 1. Effect of N-Myc deficiency on mouse limb bud formation. (A)
Comparison of PC control embryos with PC-NMycf/f and
N-Myc null embryos at E10.5. Arrows indicate forelimb and hindlimb
buds. Note that N-Myc null embryos die between E10.5 and 11.5.
(B) Representative whole-mount in situ hybridization results showing
forelimb expression of the indicated genes at E10.5. At least three sets of
embryos were used for each probe. A, anterior; P, posterior.