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Figure 3


Fig. 3. Decline in gene expression levels as tail elongation arrests. Lateral views of tail buds hybridised with in situ probes for Fgf8 (A-D), Wnt3a (E-H'), Cdx2 (I-L) or T (M-P). Insets in C,G,H,K show dorsal views. (H,H') Two E13.5 tails hybridised with Wnt3a, showing very low (H) or undetectable (H') expression.