Eva Rudolf-Müller is a freelance author at lifelikeinc.com. She studied human medicine and journalism and worked in both areas - as a doctor in the clinic, as a reviewer, as well as a medical journalist for various journals. Currently, she works in online journalism, where a wide range of medicine is offered to all.More about the lifelikeinc.com expertsleukocytes are blood cells that are responsible for the infection defense. They are also called white blood cells or white blood cells because they contain no red blood pigment. There are several types of leukocytes that perform different tasks in immune defense. Read more about the laboratory value of leucocytes!
- What are leukocytes?
- When do you determine the leucocyte value?
- Leucocyte normal values
- When are too few leukocytes in the blood?
- When are too many leukocytes in the blood?
- What to do if the leukocyte value is changed?
What are leukocytes?
Leukocytes are blood cells that, in contrast to red blood cells (erythrocytes) do not contain a red blood pigment. They therefore appear "white" or farbarm. They are therefore called white blood cells.
The main task of leukocytes is the defense against pathogens. The white blood cells are located in the blood, tissues, mucous membranes and lymph nodes. Many of them have the ability to move actively and can migrate from the blood vessels into the tissues.
All leukocytes are derived from a common precursor cell from the bone marrow, the so-called pluripotent stem cell. Special growth factors ensure that the stem cell is transformed into the various white blood cells: granulocytes, monocytes and lymphocytes.
The granulocytes show under the microscope in their interior a "granular" appearance. Depending on the dyeability of the cell constituents, a distinction is made between basophilic, neutrophilic and eosinophilic granulocytes under the microscope. Each of these cell types takes care of other forms of pathogens and is different in the defense against infection.
Granulocytes are found either on the inner walls of the vessels or in the circulating blood. There they stay after their education about seven hours and are then dismantled.
Because granulocytes can move on their own, they can migrate from the blood vessel into the tissues and into the mucous membranes. After four to five days, the tissue-accessible granulocytes are degraded.