This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Major basic protein is secreted by? 
Select and explain. 
A. Neutrophil, B. Basophil, C. Platelet, D. Eosinophil
D: Eosinophil
Answer: D: Eosinophil 
Explanation: Eosinophil REF: Harrison's 17th ed chapter 61 The distinctive feature of the red-staining (Wright's stain) eosinophil granule is its crystalline core consisting of an arginine-rich protein (major basic protein) with histaminase activity, impoant in host defense against parasites