Early marker genes for hemato-vascular progenitors, such as early angioblast/hematopoietic mesoderm marker genes scl (A, B) and hbae1 (C, D), somitic mesoderm marker gene myod (E, F), and endothelial cell marker gene fli1 (G, H), are affected in lateral mesoderm of mtmr8 knockdown embryos during somitogenesis. All pictures were taken from 12 somites stage embryos. Panels are flat-mounted dorsal views (anterior toward the left). ALM (anterior lateral mesoderm) and PLM (posterior lateral mesoderm) are indicated by arrows. (I) Percentages of scl, hbae1, myod and fli1 expression of mtmr8 morphant embryos relative to Cont-MO embryos revealed by Q-RT-PCR. * indicates significance of p < 0.05.