This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunity, Subject name: Pathology
[{'content': 'HIV affects? \nSelect and explain. \nA. B-cells, B. Helper T cells, C. Suppressor T-cells, D. Cytotoxic T-cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Helper T cells(Ref: Robbins 9th/pg 246-249)gp120 receptors on HIV binds to host cell receptors (CD4) on QT-Lymphocytes (helper T cells)MacrophagesDendritic cellsOther Antigen presenting cells', 'role': 'assistant'}]