News tagged with white blood cells

Related topics: cells , immune system , immune cells , t cells , immune response

Drugs fail to reawaken dormant HIV infection

Scientists at Johns Hopkins report that compounds they hoped would "wake up" dormant reservoirs of HIV inside immune system T cells—a strategy designed to reverse latency and make the cells vulnerable to ...

Mar 23, 2014
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New study finds novel population of neutrophils

Case Western Reserve University researchers have discovered a novel population of neutrophils, which are the body's infection control workhorses. These cells have an enhanced microbial killing ability and are thereby better ...

Mar 24, 2014
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Breakthrough in HIV and Hep C vaccine research

(Medical Xpress)—Plans for a new type of DNA vaccine to protect against the deadly HIV and Hepatitis C viruses have taken an important step forward, with University of Adelaide researchers applying for a patent based on ...

Mar 25, 2014
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White blood cell

White blood cells (WBCs), or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials. Five different and diverse types of leukocytes exist, but they are all 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.

The number of leukocytes in the blood is often an indicator of disease. There are normally between 4×109 and 1.1×1010 white blood cells in a litre of blood, making up approximately 1% of blood in a healthy adult. An increase in the number of leukocytes over the upper limits is called leukocytosis, and in leukopenia, this number is much lower than the lower limit. The physical properties of leukocytes, such as volume, conductivity, and granularity, may change due to activation, the presence of immature cells, or the presence of malignant leukocytes in leukemia.

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