Table 2. Cross-reactivity of therapy-induced IgG1 Abs with major allergens.

	Alder		Hazel		Celery		Carrot		Apple
Group	Before	After	Before	After	Before	After	Before	After	Before	After
Placebo	0.125	0.121	0.086	0.082	0.048	0.043	0.087	0.084	0.087	0.081
Active treatment	0.067	0.439	0.056	0.312	0.048	0.140	0.066	0.127	0.050	0.191

Major allergens are as follows: alder pollen, Aln g 1; hazel pollen, Cor a l; celery, Api g 1; carrot, Dau c 1; and apple, Mal d 1. Results are given for patients showing improvement of their birch-pollen allergy-associated oral allergy syndrome (n = 7) vs. a randomly selected placebo group (n = 7). Mean OD values corresponding to the amount of allergen-specific Abs are given for the three groups before and after treatment.