The overall purpose of this study was to investigate how airborne house dust particles may
contribute to an allergic immune response, and thereby also to asthma and other respiratory
symptoms. The following aims were set: first, to quantify and characterize indoor suspended
particulate matter (SPM) with regard to amount, as well as elemental and size distribution,
second, to identify possible mechanisms by which SPM may affect the allergic immune
response. A vast majority of the particles in SPM samples from homes in Oslo were found to …