Vinckier and Smets. 2001. The authors describe the presence of orbicules (sometimes called Ubish bodies) in the anthers of 12 allergenic plant species although they were absent in several other species investigated. Orbicules were also found to be present on the pollen exine or several species. The authors speculate on the possible role of orbicules as carriers of pollen allergens in paucimicronic size range.