This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'All are peripheral lymphoid organs except ? \nSelect and explain. \nA. Lymph nodes, B. Spleen, C. Mucosa associated lymphoid tissue, D. Thymus', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Thymus Lymphoid system . The lymphoid system consists of all of the tissue aggregates and organs composed of lymphoid tissue which function together to produce specific resistance to immunity. . The lymphoid organs are divided into. Remember . Bone marrow acts as central as well as peripheral lymphoid organ. . Spleen is the largest lymphoid organ. . Thymus is the first organ to become predominantly lymphoid.", 'role': 'assistant'}]