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  2. Immune disorder - Wikipedia

    en.wikipedia.org/wiki/Immune_disorder

    Immune disorder. An immune disorder is a dysfunction of the immune system. [1] These disorders can be characterized in several different ways: According to the International Union of Immunological Societies, more than 150 primary immunodeficiency diseases (PIDs) have been characterized. [2] However, the number of acquired immunodeficiencies ...

  3. Immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Immunodeficiency

    Immunodeficiency, also known as immunocompromisation, is a state in which the immune system 's ability to fight infectious diseases and cancer is compromised or entirely absent. Most cases are acquired ("secondary") due to extrinsic factors that affect the patient's immune system. Examples of these extrinsic factors include HIV infection and ...

  4. Immune system - Wikipedia

    en.wikipedia.org/wiki/Immune_system

    Immune system. 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.

  5. Immune dysregulation - Wikipedia

    en.wikipedia.org/wiki/Immune_dysregulation

    Immune dysregulation is any proposed or confirmed breakdown or maladaptive change in molecular control of immune system processes. For example, dysregulation is a component in the pathogenesis of autoimmune diseases and some cancers. Immune system dysfunction, as seen in IPEX syndrome leads to immune dysfunction, polyendocrinopathy, enteropathy ...

  6. Immune tolerance - Wikipedia

    en.wikipedia.org/wiki/Immune_tolerance

    Immune tolerance is an important means by which growing tumors, which have mutated proteins and altered antigen expression, prevent elimination by the host immune system. It is well recognized that tumors are a complex and dynamic population of cells composed of transformed cells as well as stromal cells , blood vessels, tissue macrophages, and ...

  7. Adaptive immune system - Wikipedia

    en.wikipedia.org/wiki/Adaptive_immune_system

    The adaptive immune system, also known as the acquired immune system, or specific immune system is a subsystem of the immune system that is composed of specialized, systemic cells and processes that eliminate pathogens or prevent their growth. The acquired immune system is one of the two main immunity strategies found in vertebrates (the other ...

  8. Primary immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Primary_immunodeficiency

    Primary immunodeficiencies are disorders in which part of the body's immune system is missing or does not function normally. [1] To be considered a primary immunodeficiency (PID), the immune deficiency must be inborn, not caused by secondary factors such as other disease, drug treatment, or environmental exposure to toxins.

  9. Autoimmunity - Wikipedia

    en.wikipedia.org/wiki/Autoimmunity

    Specialty. Immunology. In immunology, autoimmunity is the system of immune responses of an organism against its own healthy cells, tissues and other normal body constituents. [1][2] Any disease resulting from this type of immune response is termed an "autoimmune disease". Prominent examples include celiac disease, diabetes mellitus type 1 ...