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Figure 6

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ZDB-IMAGE-201003-177
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Figures for Boezio et al., 2020
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Figure 6 (A, B) Whole-mount in situ hybridization for fbln5 expression in the OFT of 72 hpf alk5+/+ (n = 13) and alk5-/- (n = 12) larvae. Dotted lines outline the OFT. (C, C’) Fluorescent in situ hybridization for fbln5 expression (white) in the OFT of 36 hpf wild-type embryos. Green, ECs. Dotted lines outline the OFT, boxed area is shown in Figure 6—figure supplement 2B,B’. (D–F) Confocal images of 85 hpf Tg(kdrl:dsRed) alk5+/+ (n = 7), alk5-/- (n = 9), Tg(fli1:fbln5) alk5-/- (n = 9) larvae, showing the partial morphological rescue of the OFT and VA in Tg(fli1:fbln5) alk5 -/- larvae (6/9, F). Asterisk indicates the absence of the VA in alk5 mutants; dotted lines outline the OFT. (G) Percentage of OFT expansion in 78 hpf alk5+/+, alk5-/-, and Tg(fli1:fbln5) alk5-/- animals. (H) Percentage of SMCs surrounded by Eln2 immunostaining (per sagittal plane) at 75 hpf. (I–K) Confocal images of 75 hpf larvae immunostained for Eln2. Yellow arrowheads, SMCs surrounded by Eln2 immunostaining; I, n = 7; J, n = 7; K, n = 11. (G, H) Plot values represent means ± SD; p values from Kruskal-Wallis tests, compared with the first column (alk5+/+). AA- aortic arch, VA- ventral artery. Scale bars: (A, B) 50 μm; (C, C’, I–K) 10 μm; (D–F) 15 μm. See also Figure 6—figure supplements 1–2.

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