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.