This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Viral infections, Subject name: Dental
[{'content': 'Imiquimod is used in treatment of anogenital was acts mainly as:- \nSelect and explain. \nA. Antifungal, B. Antiviral, C. Immunomodulator, D. Keratolytic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Topical immunomodulation with imiquimod 5% cream is used for treatment of: genital was superficial basal cell carcinoma actinic keratoses Acts on Toll-like receptor 7 (TLR-7). This is a cell surface receptor found on cells of monocyte lineage. Interaction of TLR-7 with ligands activates a signalling pathway, leading to release of large amounts of interferon-a, IL-12, TNF-a and other potent cytokines. S/E: irritation, discomfo and occasionally erosion at the point of application with a small risk of causing vitiligo-like depigmentation.', 'role': 'assistant'}]