title: Perennial ryegrass.
authors.affiliation: National Jewish Medical & Research Center, Denver, CO 80206, USA.
authors.forename: Richard W
authors.initials: RW
authors.lastname: Weber
mesh_terms: D052179:Antigens, Plant / Q000276:immunology; D003429:Cross Reactions; D005060:Europe; D006801:Humans; D008129:Lolium / Q000276:immunology*; D009656:North America; D011058:Pollen / Q000276:immunology; D006255:Rhinitis, Allergic, Seasonal / Q000209:etiology
chemical_list: D052179:Antigens, Plant