- 行业: Library & information science
- Number of terms: 152252
- Number of blossaries: 0
- Company Profile:
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.
A vitamin that is soluble in fat solvents and oils (lipo-soluble). Fat-soluble vitamins include vitamins A, D, E, K, F. Absorbed with ingested dietary fat, fat-soluble vitamins are stored in moderate amounts from the gastrointestinal tract. Present in minute amounts in various foods, these vitamins are essential to maintaining normal metabolism and biochemical functions; fat malabsorption may result in fat-soluble vitamin deficiencies. Fat-soluble vitamins are found in many types of foods and may be supplemented with pharmaceutical formulations.
Industry:Medical
1) Evolution is the process by which organisms change over time. Mutations produce genetic variation in populations, and the environment interacts with this variation to select those individuals best adapted to their surroundings. The best-adapted individuals leave behind more offspring than less well-adapted individuals. Given enough time, one species may evolve into many others.
2) A process of change in a certain direction <tumor evolution and progression.
Industry:Medical
1) Difficulty in swallowing which may result from neuromuscular disorder or mechanical obstruction. Dysphagia is classified into two distinct types: oropharyngeal dysphagia due to malfunction of the pharynx and upper esophageal sphincter; and esophageal dysphagia due to malfunction of the esophagus.
2) Difficulty swallowing.
Industry:Medical
1) The act or process of excreting.
2) Something eliminated by the process of excretion that is composed chiefly of urine or sweat in mammals including humans and of comparable materials in other animals, characteristically includes products of protein degradation (as urea or uric acid), usually differs from ordinary bodily secretions by lacking any further utility to the organism that produces it, and is distinguished from waste materials (as feces) that have merely passed into or through the alimentary canal without being incorporated into the body proper.
3) A waste product (as urine, feces, or vomit) eliminated from an animal body: excrement--not used technically.
Industry:Medical
An elementary particle consisting of a charge of negative electricity equal to about 1. 602 x 10-19 coulomb and having a mass when at rest of about 9. 109534 x 10-28 gram or about 1/1836 that of a proton.
Industry:Medical
1) Inability to grow and develop normally.
2) A condition in which an infant or child's weight gain and growth are far below usual levels for age.
3) Growth disorder of infants and children due to nutritional and/or emotional deprivation and resulting in loss of weight and delayed physical, emotional, and social development.
Industry:Medical
1) Process of identifying the cause of a particular disease or disorder.
2) The cause or origin of disease.
Industry:Medical
1) Coding sequence of DNA present in mature messenger RNA; DNA initially transcribed to messenger RNA consists of coding sequences (exons) and non-coding sequences (introns). Introns are spliced out of the messenger RNA prior to translation, leaving only the exons to ultimately encode the amino acid product.
2) The protein-coding DNA sequence of a gene.
3) An exon is the portion of a gene that codes for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more DNA sequences called introns. The parts of the gene sequence that are expressed in the protein are called exons, because they are expressed, while the parts of the gene sequence that are not expressed in the protein are called introns, because they come in between--or interfere with--the exons.
Industry:Medical
