News tagged with immune

Related topics: immune system

Allergic asthma: Researchers identify a key molecule

Allergies are becoming more commonplace, particularly in industrialised coun-tries. In addition to hay fever, allergic asthma is currently considered to be one of the most widespread allergies. UFZ researchers and their colleagues ...

Oct 13, 2015
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New protein found in immune cells

Researchers of the University of Freiburg have discovered Kidins220/ARMS in B cells. They also determined that it plays a decisive role in the production of antibodies and the formation of B cells, which are a type of white ...

Oct 07, 2015
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Tolerant immune system increases cancer risk

If peripheral immune tolerance is very distinct, the risk for lung cancer doubles, the risk for colon cancer increases by 60 percent, scientists from the German Cancer Research Center have now reported. They have shown for ...

Oct 06, 2015
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Snapshot turns T cell immunology on its head

Challenging a universally accepted, longstanding consensus in the field of immunity requires hard evidence. New research from the Australian Research Council Centre of excellence in advanced Molecular imaging has shown the ...

Oct 06, 2015
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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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