| H&E | hematoxylin and eosin [stain]; hemorrhage and exudate; heredity and environment |
|---|---|
| ICD | I-cell disease; immune complex disease; implantable cardioverter defibrillator; impulse-control diso... |
| NINCDS/ADRDA | National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Rel... |
| SBLA | sarcoma, breast and brain tumors, leukemia, laryngeal and lung cancer, and adrenal cortical carcinom... |
| VACTERL | vertebral abnormalities, anal atresia, cardiac abnormalities, tracheoesophageal fistula and/or esoph... |
| law of similars | The homeopathic formula expressing the law of similars, the doctrine that any drug capable of producing morbid symptoms in the healthy will remove similar symptoms occurring as an expression of disease. Another reading of the formula, employed by Hahnemann, the founder of homeopathy, is similia similibus curentur, let likes be cured by likes. Origin: L. Likes are cured by likes (05 Mar 2000) |
|---|---|
| law of specific nerve energies | Each type of sensory nerve ending, however stimulated (electrically, mechanically, etc.), gives rise to its own specific sensation; moreover, each type of sensation depends not upon any special character of the different nerves but upon the part of the brain in which their fibres terminate. Synonym: law of specific nerve energies. (05 Mar 2000) |
| law of the heart | The energy liberated by the heart when it contracts is a function of the length of its muscle fibres at the end of diastole. Synonym: Starling's law. (05 Mar 2000) |
| law of the minimum | Growth and development of plants and animals are determined by the availability of that essential nutrient which is present in the smallest amount. (05 Mar 2000) |
| Le Chatelier's law | If external factors such as temperature and pressure disturb a system in equilibrium, adjustment occurs in such a way that the effect of the disturbing factors is reduced to a minimum. Synonym: Le Chatelier's principle. (05 Mar 2000) |
| frozen-in flow law | <radiobiology> In a perfect conductor, the total magnetic flux through any surface is a constant. In a plasma which is nearly perfectly conducting, the relevant surfaces move with the plasma, the result is that the plasma is tied to the magnetic field, and the field is tied to the plasma. Motion of the plasma thus deforms the magnetic field, and vice versa. The magnetic flux is said to be frozen into the plasma. (09 Oct 1997) |
| Listing's law | When the eye leaves one object and fixes upon another, it revolves about an axis perpendicular to a plane cutting both the former and the present lines of vision. (05 Mar 2000) |
| Louis' law | Tuberculosis in any organ is associated with tuberculosis in the lung. (05 Mar 2000) |
| abstracting and indexing | Shortening or summarizing of documents; assigning of descriptors for referencing documents. (12 Dec 1998) |
| academies and institutes | Organizations representing specialised fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., national academy of sciences, brookings institution, etc. (12 Dec 1998) |
| accounts payable and receivable | Short-term debt obligations and assets occurring in the regular course of operational transactions. (12 Dec 1998) |
| aged, 80 and over | A person 80 years of age and older. (12 Dec 1998) |
| algae and fungi | Algae represent a group of spore-propagating plants, unicellular or undifferentiated into root, stem, and leaf. They include seaweed and many unicellular fresh water plants, most of which contain chlorophyll. They account for about 90% of the earth's photosynthetic activity. Fungi are eukaryotic, heterotrophic organisms that live as saprobes or parasites and include mushrooms, yeasts, smuts, molds, etc. They lack chlorophyll. (12 Dec 1998) |
| alkyl and aryl transferases | <enzyme> A somewhat heterogeneous class of enzymes that catalyze the transfer of alkyl or related groups (excluding methyl groups). Registry number: EC 2.5 (12 Dec 1998) |
| allergy and immunology | A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder. (12 Dec 1998) |