Basophils are activated by
IL - 5
Neutrophils
Killer inhibitory peptide
Cell fixed Ig E
Cell fixed IgE are the activators of basophils . MAST CELL BASOPHIL Foreign antigen binds to the IgE bound to cell and leads to the activation of mast cell or basophil which leads to Type 1 hypersensitivity. IL-5 leads to activation of eosinophils.