| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |
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| SFT | Sabin-Feldman test; sensory feedback therapy; skinfold thickness |
| Feldman, Harry Alfred | <person> U.S. Epidemiologist, *1914. See: Sabin-Feldman dye test. (05 Mar 2000) |
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| Sabin-Feldman dye test | A method for the detection of anti-toxoplasma antibody in serum, based on the fact that Toxoplasma gondii cells (from peritoneal exudate in mice) are fairly well stained with alkaline methylene blue, whereas organisms in a serum that contains specific antibody have no affinity for the dye; furthermore, normal toxoplasma cells become rounded, and the nucleus and cytoplasm deeply stained, when treated with the methylene blue; on the other hand, when dye is mixed with organisms and antibody, the cells retain their crescent shape and only the shrunken nuclear endosome is stained. (05 Mar 2000) |
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