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Fig. 2. In situ hybridization of 35S labeled riboprobes to limb elements
following Smoothened removal. (A-J) E14.5 tibial elements of indicated
genotypes hybridized with probes as indicated. Signals are shown in red on
sections counterstained with Toluidine Blue. The orange arrows denote the
perichondrium not expressing the various genes in Cre10;
Smon/c embryos.