Figure 3
From: Modeling and live imaging of mechanical instabilities in the zebrafish aorta during hematopoiesis
Live imaging of a zebrafish dorsal aorta morphogenesis from 30 to 60 hpf. (a) Pictures extracted from the live imaging of the Tg(kdrl:caax-mCherry) zebrafish embryo segments shows the DA morphological changes at 30 hpf, 36.5 hpf and 59 hpf. Arabic numerals conform to the b panel. (b) Trajectory describing the developmental process in the parameter space \(\langle p,\sigma \rangle (\)i.e., normalized pressure difference and normalized longitudinal stress). Arabic numerals correspond to the images in the a panel. Roman numerals correspond to the DA shape evolution stages: (I) initiation of the DA expansion; (II) emergence of the periodic pattern of thinner and thicker regions; (III) peaking of the DA radius; (IV) restoration of the initial shape of a straight cylinder. Diagram corresponds to the tube with \(\gamma =1/50\). Double-headed arrows show DA diameter variation. Black arrow shows instability wave vector. Scale bar: 25 µm. See also Supplementary Videos S1 to S4.
