This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Primary granules contain which enzyme? 
Select and explain. 
A. Myeloperoxidase, B. Hydrolases, C. Lactoferrin, D. Phospholipase A2
A: Myeloperoxidase
Answer: A: Myeloperoxidase 
Explanation: Ans. is 'a' i.e., Myeloperoxidase Contents of neutrophil granulesPrimary (azeurophilic) granulesSecondary (specific) granulesTeriary (C-Particle) granules (From internet)1. Myeloperoxidase2. Lysozyme3. Acid hydrolases4. Elasases5. Nonspecific collegenase6. Bacterial permeability protein7. Defensin (BPI)8. Cathepsin G9. Phospholipase A21. Lactoferrin2. Lysozyme3. Alkaline phosphatase4. Type IV Collegenase5. Phospholipase A26. Leukocyte adhesion molecules7. Plasminogen activator8. Vit B12 binding protein9. Gelatinase10. Histaminase11. b2-miroglobulin12. Cytochrome BContains gelatinase and acid hydrolases