Fernández-Rivas, M A clinical trial with purified natural major allergens from grass pollen. [electronic resource] - Arbeiten aus dem Paul-Ehrlich-Institut (Bundesamt fur Sera und Impfstoffe) zu Frankfurt a.M 1999 - 131-6; discussion 136-8 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0936-8671 Subjects--Topical Terms: Allergens--adverse effectsDouble-Blind MethodHumansImmunoglobulin E--bloodImmunoglobulin G--bloodPoaceae--immunologyPollen--immunologySkin Tests