Figure 2: (a) HDM exposure induced higher percentages of eosinophils in BALF of males (♂) and females (♀) as compared to control, but no differences were found between the HDM protocols. Combining all models, higher percentages of eosinophils after HDM exposure were found in females as compared to males (). (b) The 21-day protocol increased HDM-specific IgE in serum of male and female mice as compared to control (trend, ). Again combining all models, HDM exposure induced higher levels of HDM-specific IgE in females than in males (). ### compared to control.