title: Non-allergenic haemolysins in grass pollens and housedust mites.
abstract: 25 batches of pollen (six common grasses, maize, short ragweed) and two batches of housedust mite (Dermatophagoides pteronyssinus) all contained haemolysins. The haemolysins of two grass pollens and of the housedust mites were of small MW (100-200 Da) and apparently non-allergenic. Both caused inflammation when injected into human skin, at doses that could be experienced naturally. The "allergic" airways diseases may not be entirely immunologically mediated.
mesh_terms: D000485:Allergens / Q000032:analysis*; D000818:Animals; D004391:Dust; D006460:Hemolysin Proteins / Q000032:analysis*; D006801:Humans; D007428:Intradermal Tests; D008925:Mites / Q000276:immunology*; D006109:Poaceae / Q000276:immunology; D011058:Pollen / Q000276:immunology*; D011852:Radioallergosorbent Test; D012130:Respiratory Hypersensitivity / Q000175:diagnosis / Q000209:etiology*
chemical_list: D000485:Allergens; D004391:Dust; D006460:Hemolysin Proteins