McKaba, D G Characterization of ragweed pollen extracts prepared by sonication and other methods. [electronic resource] - The Journal of allergy May 1967 - 284-93 p. digital Publication Type: Journal Article ISSN: 0021-8707 Standard No.: 10.1016/0021-8707(67)90092-5 doi Subjects--Topical Terms: Chemistry Techniques, AnalyticalChromatography, GelHumansHypersensitivity--diagnosisMolecular WeightPlant ExtractsPlant Proteins--analysisPollenSkin Tests