[Allergologic-immunochemical study of tree and bush pollen. II--Study of the sensitization spectrum of patients with seasonal rhinitis in the spring].

80 patients sera were investigated by means of radioallergosorbent test (RAST) and enzyme linked immunosorbent assay (ELISA). Specific IgE antibodies against ten various tree pollens were determined. There is a significant correlation between RAST and ELISA results. It was found that birch, beech, alder, hazel and oak pollens are most important as causes of springtime hay fever. 75% of patients had increased specific IgE-titres against these pollens whereas maple, poplar, elm, sallow and ash allergens more often gave negative or only weak positive test results.