| myelatelia | (noun) any developmental defect of the spinal cord | - |
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| myelencephalon | (noun) the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults | - |
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| myelin | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myeline |
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| myeline | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myelin |
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| myelinisation | (noun) the development of a myelin sheath around a nerve fiber | Synonyms: myelinization |
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| myelinization | (noun) the development of a myelin sheath around a nerve fiber | Synonyms: myelinisation |
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| myelitis | (noun) inflammation of the spinal cord | - |
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| myeloblast | (noun) a precursor of leukocytes that normally occurs only in bone marrow | - |
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| myelocyte | (noun) an immature leukocyte normally found in bone marrow | - |
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| myelofibrosis | (noun) fibrosis of the bone marrow | - |
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| myelogram | (noun) X-ray film of the spinal cord and spinal nerve roots and subarachnoid space | - |
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| myelography | (noun) roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space) | - |
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| myeloma | (noun) a tumor of the bone marrow (usually malignant) composed of cells normally found in bone marrow | - |
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| myelomeningocele | (noun) a congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation | - |
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