The main function of white blood cells is to help protect the human body from infection as well as other foreign materials. White blood cells are also known as leukocytes, and they develop in bone marrow from stem cells. More »

White blood cells help fight infections in the body by attacking pathogens, such as bacteria and viruses, after they invade the bloodstream. Healthline states that these cells are formed in the bone marrow and circulate ... More »

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The scientific name for a white blood cell is leukocyte. They are also sometimes referred to as immune cells, since white blood cells are the most important part of a human's immune system. More »

A urinary tract infection is a common cause of white blood cells appearing in the urine, according to MedicineNet. While white blood cells from the opening of the urethra (in both men and women) or the vagina (in women) ... More »

Certain medical conditions, such as cancer or a serious infection, could affect the normal range of white blood cells during a complete blood count, according to Mayo Clinic. Cancer is likely to cause a decrease in white... More »

An elevated white blood cell count occurs when the white blood cells, also referred to as leukocytes, increase in response to infection or illness, according to MedlinePlus. Specific causes of high white blood cell count... More »

The presence of white blood cells in urine indicates a medical problem such as an infection in the urinary tract, bladder or kidneys, according to MedicineNet.com. Because urine is a sterile body fluid, there should be n... More »