News tagged with immune

Related topics: immune system

Predicting the severity of multiple sclerosis

Cells in the immune system of patients with multiple sclerosis behave differently from those of healthy individuals. Researchers at Linköping University in Sweden have exploited this difference to develop a method that can ...

Sep 14, 2016
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Feed a virus, starve a bacterial infection?

A new study puts some old folk wisdom to "feed a cold and starve a fever" to the test. In mouse models of disease, Yale researchers looked at the effects of providing nutrients during infection and found opposing effects ...

Sep 08, 2016
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Training human antibodies to protect against HIV

During HIV infection, the virus mutates too rapidly for the immune system to combat, but some people produce antibodies that can recognize the virus even two years after infection. With an eye towards developing a vaccine, ...

Sep 08, 2016
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Intestinal bacteria influence food allergies

Countless microorganisms live in the intestinal tract. Researchers at the Technical University of Munich (TUM) have been able to demonstrate that intestinal bacteria also play a role in determining the strength of anaphylactic ...

Sep 07, 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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