Retinoic acid is a potential dorsalising signal in the late embryonic chick hindbrain-1

Arrow) at e3.5. . Transverse section through rostral hindbrain (dashed line in A) showing roof plate expression. . Higher magnification of expression (in B) shows in both the mesenchyme (m) and roofplate (rp). . Expression in the meningeal membranes surrounding the neural tube from e5 (*). . Transverse section through hindbrain shows expression is concentrated in the meninges. . Higher magnification of expression in B shows expression through all layers overlying the ventricle. . Whole embryo at e6.5 with meninges largely removed. . Transverse section through midbrain (at level indicated by black dashed line in G) shows expression in the oculomotor nucleus. . Transverse section through caudal hindbrain (at level indicated by white dashed line in G) shows expression in a dorsal neural population. . Dorsal view of e8 whole embryo with meninges removed shows in restricted parasagittal domains (arrows). . Dorsal view (same embryo as J) with the cerebellum displaced to reveal dorsal hindbrain expression (arrow).<p><b>Copyright information:</b></p><p>Taken from "Retinoic acid is a potential dorsalising signal in the late embryonic chick hindbrain"</p><p>http://www.biomedcentral.com/1471-213X/7/138</p><p>BMC Developmental Biology 2007;7():138-138.</p><p>Published online 19 Dec 2007</p><p>PMCID:PMC2266733.</p><p>