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  • Title: Enzyme-linked immunosorbent assay for determination of major excrement allergens of house dust mite species D. pteronyssinus, D. farinae and D. microceras.
    Author: Lind P.
    Journal: Allergy; 1986 Aug; 41(6):442-51. PubMed ID: 3789329.
    Abstract:
    Species-specific enzyme-linked immunosorbent assays (ELISA) for major excrement allergens (Dp42, Df6 and Dm6) of D. pteronyssinus, D. farinae and D. microceras in house dust were established, using immunoabsorbed, monospecific rabbit antibodies, coupled to horse radish peroxidase. The limit of detection was 13, 4 and 38 ng/ml, respectively. The coefficient of variation for the entire procedure, including dust sieving (212 micron) and extraction was 5-16% for allergen levels above 1000 ng/g dust. Allergen concentration by ELISA correlated well with the number of mite bodies identified and counted by microscopy in 31 dusts (r = 0.88, 0.86 and 0.82 for combined Dermatophagoides sp., D. pteronyssinus and D. farinae group, resp.) Dermatophagoides allergen was recorded in 21/22 mattress dusts (median: 26,000 ng/g; maximum: 290,000 ng/g). D. pteronyssinus allergen occurred in largest amounts (median 7,500 ng/g) followed by D. microceras (median 650 ng/g) and D. farinae (median 240 ng/g).
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