Microscopic photographs (1000x) of alder and birch pollens captured by the Asthma & Allergy Center's Rotorod Aeroallergen Sampler on February 15th, 2002.  The number of germination pores help identify pollens.                          

          Photomicrographs made at the Asthma & Allergy Center of Whatcom County

            For more pictures of pollens, as well as mold spores click on    Pollen Photos

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