Figure 2. AA5x angiogenesis requires klf2a.
a, Embryos subjected to whole mount in situ hybridization at 65 hpf using indicated riboprobes (klf2a, cdh5). Lateral view, anterior to the left, dorsal is up. Embryos were injected with 2 ng of scrambled control (left) or tnnt2 (right) MO. Aortic arch region is denoted by black boxes; aortic arches 4-6 are indicated by numbered arrows in cases where staining is present. b, Microangiogram of 72 hpf Tg(kdrl:egfp)la116 embryo injected with 11 ng-embryo scrambled control MO (top) or klf2a ATG MO (bottom); arrowheads indicate position of normal AA5x formation, arrows denote lateral dorsal aortae. Dorsal views, anterior is up.