Fig. 5From: Use of a vibrating mesh nebulizer for allergen challengeIndividual values for Wright® allergen PD20 on the left and Solo® allergen PD20 on the right. The red points are the geometric means with standard error bars. The Wright® allergen PD20 is slightly but significantly smaller than the Solo® allergen PD20 (6.7 vs 10.5 units respectively, p = 0.003)Back to article page