This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology
TB infects which cell 
Select and explain. 
A. Macrophage, B. Lymphocyte, C. Neutrophils, D. Eosinophils
A: Macrophage
Answer: A: Macrophage 
Explanation: Ans. (a) Macrophage(Ref: Robbins 9th/pg 375; 8th/pg 370)Mycobacterium tuberculosisenters into macrophages with the help of mannose binding lectin Q and CR3. QMacrophages Q are the primary cells infected by M. tuberculosis