News tagged with immune

Related topics: immune system

Can good fat boost your fitness level?

Fish oil supplements may seem like a relatively recent health fad but they have actually been produced in the UK on a large scale since 1935 by the company Seven Seas Ltd. Since then, the fish oil supplement market has continued ...

Jan 18, 2017
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Opioids produce analgesia via immune cells

Opioids are the most powerful painkillers. Researchers at the Charité - Universitätsmedizin Berlin have now found that the analgesic effects of opioids are not exclusively mediated by opioid receptors in the brain, but ...

Jan 17, 2017
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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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