title: Modifications of the Wright Dust Feed Mechanism permitting stable dispersion of native ragweed pollen.
abstract: Conventional methods have not provided aerosols of suitable constancy. The Wright Dust Feed Mechanism was adapted to provide tractable pollen dispersion.
mesh_terms: D006801:Humans; D006109:Poaceae / Q000276:immunology*; D011058:Pollen; D012129:Respiratory Function Tests / Q000295:instrumentation