abnormal embryonic tissue morphology abnormal neural tube morphology/development Fyler:4339 central nervous system: neural tube defects neural tube dysplasia abnormal neural tube morphology MP:0002151 MGI:2173611 any structural anomaly of or development of the hollow epithelial tube found on the dorsal side of the vertebrate embryo that develops into the central nervous system (i.e. brain and spinal cord) MPheno.ontology GO:0007420 neural tube defects MP:0000922 abnormal nervous system development