| CNL | cardiolipin natural lecithin; chronic neutrophilic leukemia |
|---|---|
| DND | died a natural death |
| e | base of natural logarithms, approximately 2.7182818285; egg transfer; ejection; electric charge; ele... |
| LGL-NK | large granular lymphocyte-natural killer |
| ln | natural logarithm |
natural purification (자정 작용
| natural language processing | Computer processing of a language with rules that reflect and describe current usage rather than prescribed usage. (12 Dec 1998) |
|---|---|
| natural mutation | A mutation which occurs by itself without first being affected by a mutagen, for example during the process of DNA replication. Spontaneous mutations arise at a remarkably constant rate. The rate that spontaneous mutations arise has been used as an evolutionary clock to estimate how closely related two (or more) separate species are to each other. (09 Oct 1997) |
| natural passive immunity | Immunity conferred by the mother on the foetus or newborn. (14 Nov 1997) |
| natural pigment | A naturally occurring coloured compound; absorbs light in the visible range of the electromagnetic spectrum. Compare: structural colour. Synonym: biochrome. (05 Mar 2000) |
| natural products | Naturally occurring compounds that are end products of secondary metabolism; often, they are unique compounds for particular organisms or classes of organisms. (05 Mar 2000) |
| natural selection | The hypothesis that genotype environment interactions occurring at the phenotypic level lead to differential reproductive success of individuals and hence to modification of the gene pool of a population. (18 Nov 1997) |
| immunity, natural | The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from non-specific mechanisms such as genetic endowment, naturally occurring antiviral and bactericidal substances, phagocytosis, and constitutional factors such as body temperature, oxygen tension, and age. (12 Dec 1998) |
| killer cells, natural | Cells responsible for spontaneous cytotoxicity of a variety of tumour cells without prior immunization. These natural killer cells are found in non-immune humans and experimental animals and are thought by some to be the same as killer cells (killing by antibody-dependent cell cytotoxicity), but they can also kill in the absence of antibody. (12 Dec 1998) |
| alpha-phenoxyethylpenicillin potassium | A penicillin preparation that is stable in gastric acid and is rapidly but only partially absorbed from the gastrointestinal tract. Synonym: alpha-phenoxyethylpenicillin potassium, penicillin B. (05 Mar 2000) |
| alpha-phenoxypropylpenicillin potassium | A semisynthetic acid-stable penicillin that may be more effective than penicillin G. Synonym: alpha-phenoxypropylpenicillin potassium. (05 Mar 2000) |
| aluminum potassium sulfate | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| amoxicillin-potassium clavulanate combination | <chemical> A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat broad-spectrum antibacterial infections, especially of resistant strains. Pharmacological action: antibiotics, combined, antibiotics, lactam, enzyme inhibitors. (12 Dec 1998) |
| antimony potassium tartrate | <chemical> Bis(mu-(2,3-dihydroxybutanedioato(4-)-o(1),o(2):o(3),o(4)))diantimonate(2-) dipotassium trihydrate, stereoisomer. A schistosomicide possibly useful against other parasites. It has irritant emetic properties and may cause lethal cardiac toxicity among other adverse effects. Pharmacological action: schistosomicides. Chemical name: Antimonate(2-), bis(mu-(2,3-dihydroxybutanedioato(4-)-O1,O2:O3,O4))di-, dipotassium, trihydrate, stereoisomer (12 Dec 1998) |
| canrenoate potassium | <chemical> A synthetic pregnadiene derivative with anti-aldosterone activity. Pharmacological action: aldosterone antagonists. Chemical name: Pregna-4,6-diene-21-carboxylic acid, 17-hydroxy-3-oxo-, monopotassium salt, (17alpha)- (12 Dec 1998) |
| penicillin G potassium | Potassium benzylpenicillin;the potassium salt of penicillin G, containing 85 to 90% penicillin G. (05 Mar 2000) |