what body organ produces lymphocytes
Summary Information: Spleen. Spleen: The spleen is an organ of the lymphatic system and immune system. It is the largest of the lymph organs and is located in the upper left abdominal area. It is made of lymphatic tissue that produces lymphocytes and also houses macrophages.pleen: The spleen is an organ of the lymphatic system and immune system. It is the largest of the lymph organs and is located in the upper left abdominal area.