<prompt> Major basic proteins are produced by?LymphocyteEosinophilNeutrophilBasophil  <response>: Eosinophils have a granule that contains major basic protein MBPProteoglycan 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. 