Fig. 2From: Exploratory study of tolerability and immunological effect of a short up-dosing immunotherapy phase with a standardised allergen extract derived from pollen of Olea europaea Changes in immediate skin reactivity by parallel line assay. Subjects were prick-tested with an Olea europaea pollen allergen extract containing 12, 60 and 300 μg/ml Ole e 1 before (V1) and after (V6) 6 week treatment. The reduction of skin reactivity was assessed by parallel line assay. CTI, Cutaneous Tolerance IndexBack to article page