a tube formed by the closure of ectodermal tissue in the early vertebrate embryo that later develops into the brain, spinal cord, nerves, and ganglia.
the structure in mammalian embryos that develops into the brain and spinal cord. Incomplete development results in neural-tube defects, such as spina bifida, in a newborn baby
neural tube n.
A dorsal tubular structure in the vertebrate embryo that develops into the brain and spinal cord.
A tubular structure that results from the folding of tissue along the back of vertebrate embryos and develops into the brain and spinal cord. Improper folding of the neural tube is the cause of spina bifida and other birth defects.
noun, Pathology. 1. any of a group of congenital abnormalities involving the brain and spinal cord, including spina bifida and meningocele, caused by failure of the neural tube to close properly during embryonic development.
- Neuraminic acid
neuraminic acid neu·ra·min·ic acid (nur’ə-mĭn’ĭk, nyur’-) n. An aldol condensation product of mannosamine and pyruvic acid and the parent acid of sialic acids.
/ˌnjʊərəˈmɪnɪdeɪz/ noun 1. any of various enzymes, found esp in viruses, that catalyse the breakdown of glucosides containing neuraminic acid, an amino sugar neuraminidase neu·ra·min·i·dase (nur’ə-mĭn’ĭ-dās’, -dāz’, nyur’-) n. An enzyme that catalyzes the hydrolysis of terminal acylneuraminic residues from oligosaccharides, glycoproteins, and glycolipids. It is present as a surface antigen in myxoviruses. Also called […]
neuranagenesis neu·ran·a·gen·e·sis (nur’ān-ə-jěn’ĭ-sĭs, nyur’-) n. Regeneration of a nerve.