What experiments demonstrate how the apical-basal axes are patterned in the neural tube? The Neural Tube Dorsal-Ventral Axes and the Role of Shh Starting at the ventral end, the following structures comprise the spinal cord: floor plate; cell bodies of somatic motor neurons; cell bodies of commisural neurons; roof plate. The floor plate guides axons [...]

Role of dorsal-ventral patterning system (DPP/Sog vs BMP/chordin) in neurulation In Drosophila, the dorsal-ventral patterning system causes a ventro-lateral portion of the blastoderm layer to become committed to a neurectodermal fate. The presumptive neurectodermal cells develop from nuclei that contain moderate levels of nuclear dorsal protein. Following cellularization of the blastoderm and the onset of [...]