f/u; f/v; f/vf; f/w; f/x; f/y; f:c; f:g; f:i; f:t psa; f@h; f@r; f0; f0gx; f1; f10; f11; f125; f1p; f1pa; f1re; f1sh; f2; f2001; f2a; f2b
White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.Leukocytes are found throughout the body, including the blood and lymphatic system. Five different and diverse types of leukocytes exist.he number of leukocytes in the blood is often an indicator of disease, and thus the WBC count is an important subset of the complete blood count. The normal white cell count is usually between 4 and 11 Ã 10 9 /L. In the US this is usually expressed as 4,000â11,000 white blood cells per microliter of blood.
(January 2010). Leukocytosis is a white blood cell count (the leukocyte count) above the normal range in the blood. It is frequently a sign of an inflammatory response, most commonly the result of infection, but may also occur following certain parasitic infections or bone tumors.eukocytosis is a white blood cell count (the leukocyte count) above the normal range in the blood.