After 3 years of occupational exposure to powdered coriander - a spice - a woman developed respiratory symptoms of immediate hypersensitivity. Skin tests, nasal and bronchial challenge tests and the RAST were positive to coriander. Column chromatography, enzymatic digestion of the fractions and skin testing suggested that the allergen is a protein.
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Suhonen et al. (1979) studied this question.
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