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Fig. 2. Local repression of BMP and canonical Wnt signalling leads to notochord formation. (A) Lateral view of an embryo injected ventrally with tBR and Lef1{Delta}HMG RNA. (B) Cross-section through the embryo shown in A. (C) Position of injection for D-G. (D,E) Lateral view of cleared embryos injected with the indicated reagents. (F,G) Cross-sections through embryos injected with the indicated reagents. ß-galactosidase activity was revealed in blue at stage 32.