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
Which of the following is found in secondary granules of neutrophils? 
Select and explain. 
A. Catalase, B. Gangliosidase, C. Proteolytic enzyme, D. Lactoferrin
D: Lactoferrin
Answer: D: Lactoferrin 
Explanation: Neutrophils have two main types of granules
The smaller speciﬁc (secondary) granules contain lysozyme, collagenase, gelatinase, lactoferrin, plasminogen activator, histaminase, and alkaline phosphatase.
The larger azurophil (primary) granules contain myeloperoxidase, bactericidal factors (such as defensins), acid hydrolases, and a variety of neutral proteases (elastase, cathepsin G, nonspeciﬁc collagenases, proteinase).
Reference-Robbins BASIC PATHOLOGY 10th edition pg-68