A 35-years old man had been suffering from bronchial asthma for a long time. Eventually he developed a status asthmaticus that became lethal. Examinations of sections materials shows a bronchial spams in the lungs. The bronchial walls show signs of cellular infiltration with predominance of eosinophilic leukocytes and lymphocytes. Labrocytes with signs of degranulation are observed. What mechanism of hypersensitivity is the cause of these changes?