Preparation of drugs
The following drugs were used: benralizumab (Creative Creative Biolabs
Inc., NY, USA) diluted in distilled water, histamine (Sigma-Aldrich,
Milan, Italy) diluted in distilled water, and mepolizumab (Creative
Creative Biolabs Inc., NY, USA) diluted in distilled water. Compounds
were stored in small aliquots at -80°C until their use.