Xenbase Image ID: 159420

Figure 1. Convergent extension (CE) during the formation of Xenopus laevis notochord. (a) General cell movements exhibited during CE. The cells move bidirectionally along the future short axis of the elongating tissue (horizontal axis in this scheme, green arrows) and intercalate between each other. The continuous intercalation allows the tissue to elongate along the perpendicular axis (blue arrows). (b, b′) Notochord formation during gastrulation in the X. laevis embryo. The region that develops into the notochord is marked with a pink color. The notochord elongates along the anteroposterior axis of the embryo by cells intercalating along the mediolateral axis. (c–c") Immunostaining of embryos injected with membrane-GFP mRNA. The notochord dramatically narrows during neurulation. Arrowheads indicate notochord–somite boundary, and the yellow arrows indicate the width of the notochord. A, anterior; P, posterior; M, medial; L, lateral; St, embryonic stage. Image published in: Shindo A (2018) © 2017 The Authors. This image is reproduced with permission of the journal and the copyright holder. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license Larger Image Printer Friendly View

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