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Use of a serologically distinct strain of Thermoactinomyces vulgaris in the diagnosis of farmer's lung disease. 1975

F B Greatorex, and J V Pether

During investigations into farmer's lung disease it was noticed that Micropolyspora faeni (MF) was isolated and identified with ease, but difficulty was encountered in the identification of Thermoactinomyces vulgaris (TV), although an organism resembling TV was frequently isolated. Extracts prepared from the isolates resembling TV (called Thermoactinomyces vulgaris variant, TVV) when tested against the standard TV antiserum by double diffusion, did not produce any precipitin lines. When TVV extracts were tested against the serum of a patient from whom TVV had been isolated from the sputum, +++ precipitin lines were observed. With the TVV extracts the authors have demonstrated the existence of a serologically distinct strain of TV, and also that it would be a useful addition to the routine testing of antibodies to farmer's lung disease.

UI MeSH Term Description Entries
D007106 Immune Sera Serum that contains antibodies. It is obtained from an animal that has been immunized either by ANTIGEN injection or infection with microorganisms containing the antigen. Antisera,Immune Serums,Sera, Immune,Serums, Immune
D008297 Male Males
D008848 Micromonosporaceae A family of gram-positive, saprophytic bacteria occurring in soil and aquatic environments.
D011233 Precipitin Tests Serologic tests in which a positive reaction manifested by visible CHEMICAL PRECIPITATION occurs when a soluble ANTIGEN reacts with its precipitins, i.e., ANTIBODIES that can form a precipitate. Precipitin Test,Test, Precipitin,Tests, Precipitin
D004391 Dust Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed) House Dust,Housedust,Dust, House
D005203 Farmer's Lung A form of alveolitis or pneumonitis due to an acquired hypersensitivity to inhaled antigens associated with farm environment. Antigens in the farm dust are commonly from bacteria actinomycetes (SACCHAROPOLYSPORA and THERMOACTINOMYCES), fungi, and animal proteins in the soil, straw, crops, pelts, serum, and excreta. Mushroom Worker's Lung,Farmer Lung,Farmer's Lungs,Farmers Lung,Mushroom Worker Lung,Mushroom Worker's Lungs,Mushroom Workers Lung
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013183 Sputum Material coughed up from the lungs and expectorated via the mouth. It contains MUCUS, cellular debris, and microorganisms. It may also contain blood or pus. Sputum, Induced,Induced Sputum,Induced Sputums,Sputums,Sputums, Induced

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