News tagged with immune

Related topics: immune system

Restoring natural immunity against cancers

Scientists at the Institut Pasteur and Inserm have successfully increased the infiltration of immune cells into tumors, thus inducing the immune system to block tumor growth. In an article published in Nature Immunology, ...

Jun 17, 2015
popularity190 comments 0

Keeping a lid on inflammation

Regulatory T cells (Treg cells) are part of the system of checks and balances that prevents the immune response from going overboard and causing autoimmune disease. Although critically important for shaping the immune response ...

Jun 17, 2015
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Transmural control of plaque formation

In atherosclerosis, fatty "plaques" form in the inner layer of arteries. As an LMU team now shows, specialized lymphoid organs found on the outer arterial wall adjacent to plaques help to restrain the inflammation that boosts ...

Jun 17, 2015
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New findings show the impact of ancestry on health

A 'one size fits all' approach to healthcare is being called into question by a researcher at Victoria University of Wellington, who says the immune systems of Māori and Pasifika people are very different from those with ...

Jun 16, 2015
popularity23 comments 0

Immunity (medical)

Immunity is a biological term that describes a state of having sufficient biological defenses to avoid infection, disease, or other unwanted biological invasion. Immunity involves both specific and non-specific components. The non-specific components act either as barriers or as eliminators of wide range of pathogens irrespective of antigenic specificity. Other components of the immune system adapt themselves to each new disease encountered and are able to generate pathogen-specific immunity.

Adaptive immunity is often sub-divided into two major types depending on how the immunity was introduced. Naturally acquired immunity occurs through contact with a disease causing agent, when the contact was not deliberate, whereas artificially acquired immunity develops only through deliberate actions such as vaccination. Both naturally and artificially acquired immunity can be further subdivided depending on whether immunity is induced in the host or passively transferred from a immune host. Passive immunity is acquired through transfer of antibodies or activated T-cells from an immune host, and is short lived, usually lasts only a few months, whereas active immunity is induced in the host itself by antigen, and lasts much longer, sometimes life-long. The diagram below summarizes these divisions of immunity.

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

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