| ALEC | artificial lung-expanding compound |
|---|---|
| MH | malignant histiocytosis; malignant hyperpyrexia; malignant hypertension; malignant hyperthermia; mam... |
| MI | first meiotic metaphase; maturation index; medical illustrator; medical informatics; medical inspect... |
| MSH | medical self-help; melanocyte-stimulating hormone; melanophore-stimulating hormone |
| MIS | management information system; medical information service; meiosis-inducing substance; minimally in... |
| MSH | Melanophore-stimulating hormone |
|---|---|
| alpha MSH | alpha melanophore-stimulating hormone |
| 125I-BHSP | 125I-Bolton Hunter substance P |
| TBARS | 2-thiobarbituric acid-reacting substance |
| AS | Aggregation substance |
| melanophore-expanding principle | A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; alpha-melanotropin is an N-acetylated peptide with 13 amino acids; beta-melanotropin has 22 amino acids. Synonym: intermedin, melanocyte-stimulating hormone, melanophore-expanding principle. (05 Mar 2000) |
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| expanding | That expands, or may be expanded; extending; spreading; enlarging. Expanding bit, Expanding drill, a pulley so made, as in sections, that its diameter can be increased or diminished. Source: Websters Dictionary (01 Mar 1998) |
| melanophore | Cell type found in skin of lower vertebrates (amphibian skin, fish scales) that contains granules of the black pigment melanin. The granules can be rapidly redeployed between a dispersed state (which darkens the skin) and concentration at the centre (which lightens it). One of a family of pigmented or light diffracting, coloured cells, known collectively as chromatophores. (18 Nov 1997) |
| teleost melanophore | <pathology> Large stellate cell found in the epidermis of fish. Cytoplasmic pigment granules (containing melanin) can be centrally located or rapidly dispersed, using a microtubule associated system. Altering the granule distribution changes the colour of the skin. (18 Nov 1997) |
| alpha substance | A filamentous plasmatic material, beaded with granules, demonstrable by means of vital staining in the immature red blood cells. Synonym: alpha substance, filar mass, filar substance, substantia reticularis, substantia reticulofilamentosa. Synonym: reticular formation. (05 Mar 2000) |
| anterior perforated substance | A region at the base of the brain through which numerous small branches of the anterior and middle cerebral arteries (lenticulostriate arteries) enter the depth of the cerebral hemisphere; it is bordered medially by the optic chasm and anterior half of the optic tract, rostrally and laterally by the lateral olfactory stria; its anteromedial part corresponds to the olfactory tubercle. Synonym: substantia perforata anterior, locus perforatus anticus, olfactory area. (05 Mar 2000) |
| autacoid substance | A substance formed metabolically by one set of cells, which alters the function of other cells. (This term is sometimes used in place of the term hormone.) (05 Mar 2000) |
| bacteriotropic substance | Opsonin or other substance that alters bacterial cells in such a manner that they are more susceptible to phagocytic action. (05 Mar 2000) |
| basophilic substance | The material consisting of granular endoplasmic reticulum and ribosomes that occurs in nerve cell bodies and dendrites. Synonym: basophil substance, basophilic substance, chromophil substance, Nissl bodies, Nissl granules, substantia basophilia, tigroid bodies, tigroid substance. (05 Mar 2000) |
| basophil substance | The material consisting of granular endoplasmic reticulum and ribosomes that occurs in nerve cell bodies and dendrites. Synonym: basophil substance, basophilic substance, chromophil substance, Nissl bodies, Nissl granules, substantia basophilia, tigroid bodies, tigroid substance. (05 Mar 2000) |
| blood group substance | Blood group-specific substances A and B, solution of complexes of polysaccharides and amino acids that reduces the titre of anti-A and anti-B isoagglutinins in serum from group O persons; used to render group O blood reasonably safe for transfusion into persons of group A, B, or AB, but does not affect any incompatibility that results from various other factors, such as Rh. (05 Mar 2000) |
| vasodepressor substance | An incompletely characterised chemical, apparently produced during liver damage, that tends to decrease vascular pressures and relax arterial walls. (05 Mar 2000) |
| gelatinous substance | The apical part of the posterior horn (dorsal horn; posterior gray column) of the spinal cord's gray matter, composed largely of very small nerve cells; its gelatinous appearance is due to its very low content of myelinated nerve fibres. Synonym: substantia gelatinosa, Rolando's gelatinous substance, Rolando's substance. (05 Mar 2000) |
| glandular substance of prostate | The glandular tissue of the prostate as distinct from the stroma and capsule. Synonym: substantia glandularis prostatae. (05 Mar 2000) |
| Reichstein's substance | One of several steroids; e.g., Reichstein's substance F (cortisone), Reichstein's substance H (corticosterone), Reichstein's substance M (cortisol), Reichstein's substance Q (cortexone), and Reichstein's substance S (cortexolone). Synonym: Reichstein's compound. (05 Mar 2000) |
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