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Definition of: neuroblast
(n
r′ə·blast, nyr′-) noun Biol.
1. A cell with a large oval nucleus in the spinal cord of the early embryo. Prolongations of such cells form the nerve fibers.
2. A part of the nervous system of an insect resulting from histolysis in the larva.
3. An embryonic cell that develops into a nerve cell.
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