abnormal embryonic tissue morphology abnormal neural tube morphology/development Fyler:4339 GO:0007420 MGI:2173611 MP:0000922 MP:0002151 MPheno.ontology abnormal neural tube morphology 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) central nervous system: neural tube defects neural tube defects neural tube dysplasia abnormal nervous system development