- 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) A disorder characterized by persistent developmentally inappropriate inattention and impulsivity.
2) A syndrome of disordered learning and disruptive behavior that is not caused by any serious underlying physical or mental disorder and that has several subtypes characterized primarily by symptoms of inattentiveness or primarily by symptoms of hyperactivity and impulsive behavior (as in speaking out of turn) or by the significant expression of all three -- abbreviation ADD; called also minimal brain dysfunction.
Industry:Medical
A peptide hormone that lowers calcium concentration in the blood. In humans, it is released by thyroid cells and acts to decrease the formation and absorptive activity of osteoclasts. Its role in regulating plasma calcium is much greater in children and in certain diseases than in normal adults.
Industry:Medical
1) Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes.
2) Decrease in size or wasting away of a body part or tissue; also: arrested development or loss of a part or organ incidental to the normal development or life of an animal or plant.
Industry:Medical
A condensed mass of chromatin that represents an inactivated X chromosome.
Industry:Medical
1) A gene on one of the non-sex chromosomes that is always expressed, even if only one copy is present.
2) Describes a trait or disorder in which the phenotype is expressed in those who have inherited only one copy of a particular gene mutation (heterozygotes); specifically refers to a gene on one of the 22 pairs of autosomes (non-sex chromosomes. )
3) Autosomal dominance is a pattern of inheritance characteristic of some genetic diseases. "Autosomal" means that the gene in question is located on one of the numbered, or non-sex, chromosomes. "Dominant" means that a single copy of the disease-associated mutation is enough to cause the disease. This is in contrast to a recessive disorder, where two copies of the mutation are needed to cause the disease. Huntington's disease is a common example of an autosomal dominant genetic disorder.
Industry:Medical
Clinical and laboratory techniques used to enhance fertility in humans and animals.
Industry:Medical
A behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood.
Industry:Medical
A measure of body fat that is the ratio of the weight of the body in kilograms to the square of its height in meters (a body mass index in adults of 25 to 29. 9 is considered an indication of overweight, and 30 or more an indication of obesity)-- abbreviation BMI; called also Quetelet index.
Industry:Medical
A thin sheet of proteoglycans and glycoproteins, especially laminin, secreted by cells as an extracellular matrix.
Industry:Medical
