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
Primary granules in neutrophlis contain all except __. 
Select and explain. 
A. Myeloperoxidase, B. Defensin, C. Acid hydrolases, D. Lactoferrin
D: Lactoferrin
Answer: D: Lactoferrin 
Explanation: Neutrophils have two main types of granules

 The smaller specific  (or secondary) granules contain lysozyme, collagenase, gelatinase, lactoferrin, plasminogen activator, histaminase, and alkaline phosphatase. 
 The larger azurophil (or primary) granules contain myeloperoxidase, bactericidal factors (such as defensins), acid hydrolases, and a variety of neutral proteases (elastase, cathepsin G, non-specific collagenases, proteinase).

Reference-Robbins BASIC PATHOLOGY 10th edition pg-68