
Fig. 7. Comparison of Foxd3 expression with Pax3, Slug, Cad-6B and RhoB. Cross sections of stage 10 chick embryos showing gene expression at three caudal levels. Sections were taken at the level of the most caudal somite, (A,D,G,J,M) the level of the segmental plate, (B,E,H,K,N) and at the mid point of the neural folds (C,F,I,L,O). (A-F) Foxd3 (A-C) and Pax3 (D-F) expression was visualized by whole-mount in situ hybridization. (G-O) Sections showing Slug (G-I), Cad-6B (J-L) and RhoB (M-O) expression at equivalent levels. The panels that are shown for Slug, Cad-6B and RhoB at each AP level represent directly adjacent sections from the same embryo. These sections are carefully matched to those shown for Pax3 and Foxd3.