Leukocytes
white blood cells
Leukocytes, commonly known as white blood cells (WBCs), are a crucial component of the immune system. Their primary function is to protect the body against infections, foreign substances, and cancer cells.
There are many types of leukocytes, including neutrophils, eosinophils, basophils, lymphocytes, and monocytes. Each of these types has a specific function in the immune system. For example, neutrophils are the most abundant type of leukocytes and are the first cells to migrate to the site of an infection. They engulf and destroy bacteria and other foreign substances. Eosinophils mainly fight off parasites, while basophils and mast cells release histamine, causing inflammation during an allergic reaction. Lymphocytes are responsible for identifying and attacking specific pathogens, and monocytes become macrophages that engulf and digest large particles and debris.
The number of leukocytes in the blood can be influenced by various factors, such as infections, stress, and medications. Abnormal levels of leukocytes can indicate various health conditions, such as leukemia, infections, or autoimmune disorders. Therefore, measuring leukocyte counts can be useful in identifying and monitoring certain medical conditions.
In conclusion, leukocytes play a crucial role in maintaining the body’s defense system. These cells work together to identify and fight off harmful pathogens and foreign substances. Understanding the function, importance, and levels of leukocytes can help in the diagnosis and management of various medical conditions.
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