Fig. 2
Fig. 2 Validation of microarray-identified Pbx-dependent genes. (A-Z) RNA in situ expression of genes from Table 1 in (A,C,E,G,I,K,M,O,Q,S,U,X) wild-type control, (B,D,F,H,J,L,N,P,R,T,V,Y) pbx2-MO; pbx4-MO, or (W,Z) myod-MO embryos. (S,T) Control gene, desm; (X-Z) slow-muscle gene, smyhc1. Although pbx2-MO; pbx4-MO embryos appear delayed relative to controls, all embryos are stage-matched at (A-T) 18-somite stage (18s), (U-W) 16s or (X-Z) 14s. krox-20 was included in all in situs to control for the pbx MOs. (A) r3 and r5 indicate krox-20 expression in hindbrain rhombomeres. (Q) Arrow marks vmhc expression in the heart primordium. Embryos are shown in (A-P,S-T) left-side view or (Q-R,U-Z) dorsal view, anterior towards the left.