Spleen: The Site of White Blood Cell Destruction & Function

The white blood cells are destroyed in the spleen. The spleen is a fist-sized organ which performs a variety of important functions. Firstly, it is involved in the lymphatic system as well as the cardiovascular systems acting as a filter for old or damaged red blood cells, as well as for platelets and white blood cells. Any red blood cells that have defects are destroyed in the spleen.