This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
HIV infects most commonly - 
Select and explain. 
A. CD4+helper cells, B. CD8+cells, C. Macrophage, D. Neutrophil
A: CD4+helper cells
Answer: A: CD4+helper cells 
Explanation: The primary oathigenic mechanism in HIV infection is the damage caused to the CD4+T lymphocyte. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:574