29 antigens of birch , 32 antigens of beech , 29 antigens of alder , 24 antigens of hazel and 31 antigens of oak pollens as well as the thermostable major allergen b of birch pollen , the allergen ca of beech , the allergen a of alder , the allergen co of hazel and the allergen q of oak pollen could be identified .
C1320238
allergen
C0002092
allergen