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: Pathology
Major basic proteins are produced by? 
Select and explain. 
A. Lymphocyte, B. Eosinophil, C. Neutrophil, D. Basophil
B: Eosinophil
Answer: B: Eosinophil 
Explanation: Eosinophils have a granule that contains major basic protein (MBP)
Proteoglycan 2, (natural killer cell activator, eosinophil granule major basic protein), also known as PRG2, is a protein which in humans is encoded by the PRG2 gene.
It is a potent enzyme against helminths. The eosinophil major basic protein also causes the release of histamine from mast cells and basophils and activates neutrophils and alveolar macrophages.