News tagged with immune

Related topics: immune system

Anti-viral rapid reaction force

After host cells have been attacked by a virus, they present parts of the pathogen on their surface. Thanks to these virus components, the killer cells patrolling in the body (CD8+ T lymphocytes) can recognise the infected ...

Dec 27, 2016
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Research aids discovery of genetic immune disorder

Investigators at the National Institutes of Health (NIH) and international colleagues have identified a genetic immune disorder characterized by increased susceptibility and poor immune control of Epstein-Barr virus (EBV) ...

Dec 23, 2016
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Oddly shaped immune cells cause fibrosis

Scientists at the Immunology Frontier Research Center (IFReC) at Osaka University, Japan, report a new group of monocytes they call SatM. Studies in mice show that SatM may be responsible for causing fibrosis and creates ...

Dec 22, 2016
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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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