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
All the statement about lactoferrin are true, EXCEPT: 
Select and explain. 
A. It has great affinity for iron, B. It transpos iron for erythropoiesis, C. It is present in exocrine secretions of body, D. It is present in secondary granules of neutrophils
B: It transpos iron for erythropoiesis
Answer: B: It transpos iron for erythropoiesis 
Explanation: Transpo of iron for erythropoesis is done by transferin and not by Lactoferin. Lactoferrin is closely related in structure to plasma iron transpo protein transferrin, and binds to excess iron. It prevents the growth of bacterial and viral microorganism and tumors which require iron for its growth. Lactoferrin a bioactive glycoprotein, is one of the body's most powerful immunodefensives. It is found in breast milk, body fluids such as saliva, tears, nasal secretions, intestinal fluids such as bile and secondary granules of neutrophils. Ref: Colostrum: Nature's Gift to The Immune System By Beth M. Ley-Jacobs, Pages 23-4.