ANATOMY

Detailed explanation-1: -Leukocytes are found in lots of places, including your spleen, an organ in your belly that filters blood and helps fight infections. Leukocytes also can be found in bone marrow, which is a thick, spongy jelly inside your bones.

Detailed explanation-2: -Specialized innate immune cells like B cells, natural killer (NK) cells, and macrophages populate locations within the spleen. Specifically, the spleen is a crucial organ for peripheral immune tolerance, complementing central immune tolerance.

Detailed explanation-3: -Leukocytes in the spleen include various subsets of T and B cells, dendritic cells (DCs) and macrophages that exert discrete functions.

Detailed explanation-4: -White blood cells, also known as leukocytes, are responsible for protecting your body from infection. As part of your immune system, white blood cells circulate in your blood and respond to injury or illness.

Detailed explanation-5: -The spleen has a few important functions. It fights any invading germs in the blood (the spleen contains infection-fighting white blood cells). It controls the level of blood cells. The spleen controls the level of white blood cells, red blood cells and platelets (small cells that form blood clots).