This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Antibodies acting predominantly on the mucosal cells belong to - \nSelect and explain. \nA. IgG class, B. IgM class, C. IgE class, D. IgA class', 'role': 'user'}, {'content': "Answer: D \nExplanation: - IgA is selectivity concentrated in secretions and on mucus surfaces forming an antibody paste and is believed to play an impoant role in local immunity against respiratory and intestinal pathogens. - inhibits the adherence of micro organisms to the surface of mucosal cells by covering the organisms and thereby preventing their entry into body tissues. Reference : Anathanarayan & paniker's 9th edition, pg no: 97 <\\p>", 'role': 'assistant'}]