- Industry: 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) The presence of an extra segment of DNA, resulting in redundant copies of a portion of a gene, an entire gene, or a series of genes, usually caused by unequal crossing-over during gene replication when gametes are formed in meiosis.
2) Duplication is a type of mutation that involves the production of one or more copies of a gene or region of a chromosome. Gene and chromosome duplications occur in all organisms, though they are especially prominent among plants. Gene duplication is an important mechanism by which evolution occurs.
Industry:Health care
1) The presence of different alleles at one or more loci on homologous chromosomes.
2) Having the two genes at corresponding loci on homologous chromosomes different for one or more loci.
Industry:Health care
1) The presence of only one chromosome from a pair; partial monosomy refers to the presence of only one copy of a segment of a chromosome.
2) Monosomy is the state of having a single copy of a chromosome pair instead of the usual two copies found in diploid cells. Monosomy can be partial if a portion of the second chromosome copy is present. Monosomy, or partial monosomy, is the cause of some human diseases such as Turner syndrome and Cri du Chat syndrome.
Industry:Health care
1) The presence of pathogenic microorganisms or their toxins in tissues or in the blood. Systemic disease caused by the spread of the microorganisms via the circulating blood is commonly called SEPTICEMIA. (From Stedman, 25th ed)
2) Invasion of the bloodstream by virulent microorganisms (as bacteria, viruses, or fungi) from a focus of infection that is accompanied by acute systemic illness -- called also blood poisoning.
Industry:Health care
1) The principle protein of connective tissue; unusual absence of sulfur aminoacids; unique presence of hydroxyproline is believed to permit a triple helical fibrous structure.
2) A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of skin, connective tissue, and the organic substance of bones and teeth.
Industry:Health care
1) The process by which a DNA molecule is duplicated.
2) The use of existing DNA as a template for the synthesis of new DNA strands. In humans and other eukaryotes, replication occurs in the cell nucleus.
3) DNA replication is the process by which a molecule of DNA is duplicated. When a cell divides, it must first duplicate its genome so that each daughter cell winds up with a complete set of chromosomes.
Industry:Health care
1) The process by which a DNA molecule is duplicated.
2) The use of existing DNA as a template for the synthesis of new DNA strands. In humans and other eukaryotes, replication occurs in the cell nucleus.
3) DNA replication is the process by which a molecule of DNA is duplicated. When a cell divides, it must first duplicate its genome so that each daughter cell winds up with a complete set of chromosomes.
Industry:Health care
1) The process by which a gene's coded information is translated into the structures present and operating in the cell (either proteins or RNAs).
2) Gene expression is the process by which the information encoded in a gene is used to direct the assembly of a protein molecule. The cell reads the sequence of the gene in groups of three bases. Each group of three bases (codon) corresponds to one of 20 different amino acids used to build the protein.
Industry:Health care
1) The process by which a gene's coded information is translated into the structures present and operating in the cell (either proteins or RNAs).
2) Gene expression is the process by which the information encoded in a gene is used to direct the assembly of a protein molecule. The cell reads the sequence of the gene in groups of three bases. Each group of three bases (codon) corresponds to one of 20 different amino acids used to build the protein.
Industry:Health care
1) The process by which cells digest parts of their own cytoplasm; allows for both recycling of macromolecular constituents under conditions of nutrient limitation and remodeling the intracellular structure for cell differentiation.
2) Digestion of cellular constituents by enzymes of the same cell.
Industry:Health care
