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
Largest lymphoid organ is 
Select and explain. 
A. Liver, B. Spleen, C. Thymus, D. Kidney
B: Spleen
Answer: B: Spleen 
Explanation: (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.