- 行业: Library & information science
- Number of terms: 152252
- Number of blossaries: 0
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The National Library of Medicine (NLM), on the campus of the National Institutes of Health in Bethesda, Maryland, is the world's largest medical library. The Library collects materials and provides information and research services in all areas of biomedicine and health care.
1) With respect to a particular trait or condition, an individual who has inherited two different alleles, usually one normal and the other abnormal, at a particular locus
2) Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.
Industry:Medical
1) Abnormal multiplication of otherwise normal cells, leading to tissue enlargement.
2) An increase in the number of cells in a tissue or organ without tumor formation. It differs from hypertrophy, which is an increase in bulk without an increase in the number of cells.
3) An abnormal increase in the number of cells in an organ or tissue.
Industry:Medical
A state or condition of being excessively or pathologically active; especially: attention deficit disorder.
Industry:Medical
1) Severe or complete loss of motor function on one side of the body; this condition is usually caused by brain diseases that are localized to the cerebral hemisphere opposite to the side of weakness; less frequently, brain stem lesions; cervical spinal cord diseases, peripheral nervous system diseases, and other conditions may manifest as hemiplegia.
2) Paralysis of one side of the body resulting from disease or injury to the brain or spinal cord.
3) Total or partial paralysis of one side of the body that results from disease of or injury to the motor centers of the brain.
Industry:Medical
Stroke caused by the rupture of a blood vessel with bleeding into the tissue of the brain.
Industry:Medical
The destruction of erythrocytes by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity.
Industry:Medical
1) A short usually highly conserved DNA sequence in various genes and especially homeotic genes that encodes a homeodomain.
2) A short stretch of nucleotides whose base sequence is virtually identical in all the genes that contain it. Homeoboxes have been found in many organisms from fruit flies to human beings. In the fruit fly, a homeobox appears to determine when particular groups of genes are expressed during development.
Industry:Medical
1) The process of cleaving a chemical compound by the addition of a molecule of water.
2) A chemical reaction that uses water to break down a compound.
Industry:Medical
1) A benign tumor of the nervous system that may occur sporadically or in association with Hippel-Lindau disease. It accounts for approximately 2% of intracranial tumors, arising most frequently in the cerebellar hemispheres and vermis. Histologically, the tumors are composed of multiple capillary and sinusoidal channels lined with endothelial cells and clusters of lipid-laden pseudoxanthoma cells. Usually solitary, these tumors can be multiple and may also occur in the brain stem, spinal cord, retina, and supratentorial compartment. Cerebellar hemangioblastomas usually present in the third decade with intracranial hypertension, and ataxia.
2) A hemangioma especially of the cerebellum that tends to be associated with von Hippel-Lindau disease.
Industry:Medical
1) With respect to a particular trait or condition, an individual who has inherited identical alleles at a particular locus.
2) An organism that has two identical alleles of a gene.
Industry:Medical
