| the effect of storage on allergen and microbial agent levels in frozen house dust. | house dust samples collected for exposure studies are often stored for variable time periods until analysis. however, there is currently no information on the effects of dust storage on the content of biocontaminants. therefore, associations were analysed between the levels of mite allergens (der p 1, der f 1), cat allergen (fel d 1) and microbial components (endotoxin, beta(1-->3)-glucan) on the one hand and the storage duration of dust samples at -20 degrees c on the other hand. | 2003 | 12622747 |