| BFR | biologic false reaction; blood flow rate; bone formation rate; buffered Ringer [solution] |
|---|---|
| DMRF | dorsal medullary reticular formation |
| ECF | effective capillary flow; eosinophilic chemotactic factor; erythroid colony formation; extended care... |
| LPF | leukocytosis-promoting factor; leukopenia factor; lipopolysaccharide factor; localized plaque format... |
| PPRF | paramedian pontine reticular formation; postpartum renal failure |
| personality formation | The life history associated with the development of individual patterns and of one's individuality. (05 Mar 2000) |
|---|---|
| rosette formation | The in vitro formation of clusters consisting of a cell (usually a lymphocyte) surrounded by antigenic cells or antigen-bearing particles (usually erythrocytes, which may or may not be coated with antibody or antibody and complement). The rosette-forming cell may be an antibody-forming cell, a memory cell, a T-cell, a cell bearing surface cytophilic antibodies, or a monocyte possessing fc receptors. Rosette formation can be used to identify specific populations of these cells. (12 Dec 1998) |
| rouleaux formation | The arrangement of red blood cells in fluid blood (or in diluted suspensions) with their biconcave surfaces in apposition, thereby forming groups that resemble stacks of coins. Synonym: false agglutination, pseudoagglutination. Origin: Fr. Pl. Of rouleau, a roll (05 Mar 2000) |
| concept formation | A cognitive process involving the formation of ideas generalised from the knowledge of qualities, aspects, and relations of objects. (12 Dec 1998) |
| heat of formation | The heat (expressed in calories or joules) absorbed or liberated during the (hypothetical) reaction in which a mole of a compound is formed from the necessary elements, in elemental form. (05 Mar 2000) |
| symptom formation | An unconscious psychological process by which a repressed impulse is indirectly manifested through a particular symptom, e.g., anxiety, compulsion, depression, hallucination, obsession. Synonym: symptom formation. (05 Mar 2000) |
| enthalpy of formation | <chemistry> The enthalpy change when 1 mole of a substance is formed from the elements in their standard states, represented by the symbol Hf. Synonym: heat of formation. (09 Jan 1998) |
| formation | 1. The act of giving form or shape to anything; a forming; a shaping. 2. The manner in which a thing is formed; structure; construction; conformation; form; as, the peculiar formation of the heart. 3. A substance formed or deposited. 4. <geology> Mineral deposits and rock masses designated with reference to their origin; as, the siliceous formation about geysers; alluvial formations; marine formations. A group of beds of the same age or period; as, the Eocene formation. 5. The arrangement of a body of troops, as in a square, column, etc. Origin: L. Formatio: cf. F. Formation. Source: Websters Dictionary (01 Mar 1998) |
| leukodystrophy with diffuse Rosenthal fibre formation | A metabolic disorder whose onset can be in infancy, adolescence, or adulthood; characterised pathologically by widespread cerebral demyelination with astrocyte and primitive oligodendroglial cell proliferation; refractile Rosenthal fibres result from the degeneration of these proliferating cells; aetiology unknown, but possibly due to a metabolic defect of astrocytes; sex-linked recessive disorder. (05 Mar 2000) |
| adrenal medulla | The inner part of the adrenal gland; it synthesises, stores and releases catecholamines. (12 Dec 1998) |
| renal medulla | The centre portion of the kidney. (27 Sep 1997) |
| medulla | The inner portion of an organ. (09 Oct 1997) |
| medulla glandulae suprarenalis | It is composed principally of anastomosing cords of cells in the core of the gland; the cells display a chromaffin reaction because of the presence of epinephrine and norepinephrine in their granules. Synonym: medulla glandulae suprarenalis, medulla of adrenal gland. (05 Mar 2000) |
| medulla nodi lymphatici | The central portion of a node consisting of cordlike masses of lymphocytes, plasma cells, and macrophages in a stroma of reticular fibres separated by lymph sinuses; it reaches the surface of the node at the hilum. Synonym: medulla nodi lymphatici. (05 Mar 2000) |
| medulla of adrenal gland | It is composed principally of anastomosing cords of cells in the core of the gland; the cells display a chromaffin reaction because of the presence of epinephrine and norepinephrine in their granules. Synonym: medulla glandulae suprarenalis, medulla of adrenal gland. (05 Mar 2000) |