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. 2015 Nov 17;22:104. doi: 10.1186/s12929-015-0209-0

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© Li et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 5 — Nr2f1b is required for the growth of intersegmental vessels. The number of cells forming each ISV were counted in wild type control Tg(fli1a:negfp) ^y7 (a) and nr2f1b morphant embryos (b) at 30 hpf. c Proportional distribution of ISVs containing 1-7 cells in both conditions. d-j Time-lapse imaging of wild type Tg(kdrl:eGFP) ^la116 (d-f) and nr2f1b morphant (g-i) embryos to examine the extension of ISV tip cell filopodia. Confocal images at 23 hpf (red; d, g) and 26hpf (green; e, h) were merged (f, i). The extension of tip cell was quantitated by pixel intensity and shows reduced extension of tip cell in nr2f1bMO (j). k-p Time-lapse imaging of wild type Tg(fli1a:nEGFP) ^y7 (k-m) and nr2f1b morphant (n-p). Scale bars represent 50 μm.