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    immune
    /ɪˈmjuːn/

    adjective

    • 1. resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells: "they were naturally immune to hepatitis B"
    • 2. protected or exempt, especially from an obligation or the effects of something: "they are immune from legal action"

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  2. www.britannica.com › science › immune-systemImmune system | Description, Function, & Facts | Britannica

    5 days ago · Immune system, the complex group of defense responses found in humans and other advanced vertebrates that helps repel disease-causing entities. Immunity from disease is conferred by two cooperative defense systems: innate immunity and acquired immunity. Learn more about the immune system’s mechanisms and evolution.

  3. en.wikipedia.org › wiki › Immune_systemImmune system - Wikipedia

    1 day ago · The immune system is a network of biological systems that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to parasitic worms, as well as cancer cells and objects such as wood splinters, distinguishing them from the organism's own healthy tissue.

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  5. en.wikipedia.org › wiki › AntibodyAntibody - Wikipedia

    5 days ago · Antibodies are central to the immune protection elicited by most vaccines and infections (although other components of the immune system certainly participate and for some diseases are considerably more important than antibodies in generating an immune response, e.g. herpes zoster).

  6. www.britannica.com › science › immune-systemImmune system - IgA, IgG, IgM | Britannica

    5 days ago · Rather, they are basically similar among broad groups. All immunoglobulins that have the same basic kinds of constant domains in their H chains are said to belong to the same class. There are five main classes—IgG, IgM, IgA, IgD, and IgE—some of which include a number of distinct subclasses.

  7. www.britannica.com › science › autoimmune-diseaseAutoimmune disease | Definition, Types, Risk Factors, &...

    5 days ago · autoimmune disease, any of a group of conditions or disorders that result from malfunction of the immune system, in which immune components react against the body’s own normal cells. More than 80 autoimmune diseases are known, the majority of which cannot be cured.

    • The Editors of Encyclopaedia Britannica

  8. www.merriam-webster.com › medical › acquired immunityAcquired immunity Definition & Meaning - Merriam-Webster

    2 days ago · The meaning of ACQUIRED IMMUNITY is immunity that develops after exposure to a suitable agent (as by an attack of a disease or by injection of antigens).

  9. www.newhealthadvisor.org › Difference-Between-Innate-andDifferences Between Innate and Adaptive (Acquired) Immunity

    4 days ago · Immune system is one of the most crucial systems of the body that is very important for human survival. It encompasses tissues and cells that are associated with the defense of our body from different pathogens and infectious agents.