The habenular subnuclei and their efferent axonal projections to the IPN. Dorsal view on a 4 day old embryo focussed on the head; anterior to the top. All nuclei are labeled with sytox orange. Efferent axons from lateral (red) and medial (blue) habenular neurons enter the dorsal and ventral interpeduncular nucleus (IPN), respectively. Axons from ventral neurons (yellow) enter the median raphe pp, parapineal.

Acknowledgments
This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image.

Reprinted from Mechanisms of Development, 130(6-8), Hüsken, U., and Carl, M., The Wnt/beta-catenin signaling pathway establishes neuroanatomical asymmetries and their laterality, 330-5, Copyright (2013) with permission from Elsevier. Full text @ Mech. Dev.