News tagged with immune cells

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

A new pathway discovered regulating autoimmune diseases

The main function of the immune system is to protect against diseases and infections. For unknown reasons our immune system attacks healthy cells, tissues and organs in a process called autoimmunity, which can result in diseases ...

Oct 07, 2014
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Counting the seconds for immunological tolerance

Our immune system must distinguish between self and foreign and in order to fight infections without damaging the body's own cells at the same time. The immune system is loyal to cells in the body, but how ...

Oct 02, 2014
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Research reveals how lymph nodes expand during disease

Cancer Research UK and UCL scientists have discovered that the same specialised immune cells that patrol the body and spot infections also trigger the expansion of immune organs called lymph nodes, according to a study published ...

Oct 22, 2014
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How metastases develop in the liver

In order to invade healthy tissue, tumor cells must leave the actual tumor and enter the bloodstream or lymphatic system. For this purpose, they use certain enzymes, proteases that break down the tissue surrounding the tumor, ...

Oct 14, 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.

This text uses material from Wikipedia licensed under CC BY-SA