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old tuberculin |
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tuberculin /tu·ber·cu·lin/ (-lin) a sterile solution containing the growth products of, or specific substances extracted from, the tubercle bacillus; used in various forms in the diagnosis of tuberculosis; see also under test. Old tuberculin (OT) a sterile solution of a heat-concentrated filtrate of tubercle bacillus culture grown on a special medium; used for tuberculin tests. PPD tuberculin , purified protein derivative tuberculin a sterile solution of a purified protein fraction precipitated from a filtrate of tubercle bacillus grown on a special medium; used in tuberculin tests. old tuberculin Etymology: ME, ald + L, tubercle the original formula for an extract of the tubercle bacillus used in the treatment of tuberculosis by Koch, using a glycerin-broth culture of Mycobacterium tuberculosis after filtration and concentration of the liquid. old tuberculin see tuberculin. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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