Leukocytes or white blood cells are the cells of the human blood that, unlike red blood cells, contain nuclei and no hemoglobin.
Division:
White blood cells are not one homogenous kind of cell, but a family of blood cells that fulfill very different functions in the human immune system. They can be roughly sorted by morphological criteria into the following groups:
This classification is used partially in the differential blood count. The pattern of distribution of the different types of cells can be used to assess the immunity status of the course of infections.
(Picture: Mikael Häggström)
