| colloidal gold reaction | A test (now obsolete) based on precipitation of cerebrospinal fluid protein when mixed with colloidal gold. Abnormalities in this reaction were observed in patients with syphilis, multiple sclerosis, poliomyelitis, and encephalitis. (05 Mar 2000) |
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| colloidal radioactive gold | A radioactive isotope of gold emitting negative beta particles and gamma radiation, with a half-life of 2.7 days; formerly used for irradiation of closed serous cavities in the palliative treatment of ascites and pleural effusion due to metastatic malignancies, and for liver scans. Synonym: 198Au colloid, colloidal radioactive gold. (05 Mar 2000) |
| gold sol test | An obsolete, non-specific test for altered proteins in spinal fluid. As originally used by Lange in 1912, the test was thought to be specific for neurosyphilis; however, this proved to be incorrect. Dilutions of spinal fluid are made in saline and to these a colloidal gold solution is added; if altered proteins are present, there is a colour change or precipitate formed. at present, its chief use is to demonstrate cerebrospinal fluid protein abnormalities in multiple sclerosis. Synonym: gold sol test, Zsigmondy's test. (05 Mar 2000) |
| chromic phosphate P 32 colloidal suspension | A pure beta-emitting colloidal, nonabsorbable radiopharmaceutical administered into body cavities such as the pleural or peritoneal spaces to control malignant effusions. See: sodium phosphate P 32. (05 Mar 2000) |
| colloidal | <chemistry> Of the nature of a colloid. (18 Nov 1997) |
| colloidal dispersion | <chemistry> A mixture containing particles larger than those found in a solution but small enough to remain suspended for a very long time. (09 Oct 1997) |
| colloidal gel | A colloid that has developed resistance to flow because of chemical or thermal change. (05 Mar 2000) |
| colloidal metal | A colloidal solution of a metal obtained by passing electric sparks between terminals of the metal in distilled water. Synonym: electrosol. (05 Mar 2000) |
| colloidal silicon dioxide | A submicroscopic fumed silica prepared by the vapor-phase hydrolysis of a silicon compound; used as a tablet diluent and as a suspending and thickening agent. (05 Mar 2000) |
| colloidal silver iodide | An antiseptic used for treatment of inflammation of the mucous membranes. (05 Mar 2000) |
| colloidal solution | A dispersoid, emulsoid, or suspensoid. Synonym: colloidal dispersion. (05 Mar 2000) |
| Mowry's colloidal iron stain | <technique> A stain used for demonstrating acid mucopolysaccharides. (05 Mar 2000) |
| Hale's colloidal iron stain | <technique> A stain used to distinguish acid mucopolysaccharides such as hyaluronic acid; may be combined with PAS to also visualise carbohydrate-containing proteins and glycoproteins. (05 Mar 2000) |
| antirheumatic agents, gold | Gold salts that are effective in the therapy of rheumatoid arthritis. These compounds usually do not have analgesic activity. Since these compounds are poorly absorbed from the intestinal tract, they are usually given intramuscularly. (12 Dec 1998) |
| mat gold | Powdered gold formed by electrolytic precipitation, compressed into strips, and sintered. (05 Mar 2000) |