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This transverse section through the neural tube of a day-old zebrafish embryo shows microtubules (green), which are elongated and orientated along the apical-basal axis of neuroepithelial cells. Microtubule destabilization in Rgma and Neo1a-depleted embryos impairs neural tube formation. Image was taken by Dr. Elim Hong and edited by Maraki Negesse. For more information, see the article by Brown et al. (pages 7465–7484).