This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Anatomy
[{'content': 'Largest lymphoid organ is \nSelect and explain. \nA. Liver, B. Spleen, C. Thymus, D. Kidney', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Spleen [BDC II4-279# Largest lymphatic organ in the human body is the spleen.> Primary function of the spleen is to purify the blood and store blood cells.> It helps the immune system identify and combat foreign antibodies.> Spleen consists of white pulp and red pulp.> White pulp generates blood cells and synthesizes antibodies, and the red pulp removes old blood cells and filters the blood.', 'role': 'assistant'}]