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Category: Immunology

link to Hypersensitivity Reactions: an Overview

Hypersensitivity Reactions: an Overview

Hypersensitivity refers to an exaggerated or unnecessary reaction produced by the host immune system. It is an immunological dysfunction, mainly targeted at innocuous antigens with consequent tissue...

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link to Allergies and Autoimmunity: Similarities and Differences

Allergies and Autoimmunity: Similarities and Differences

Allergies and autoimmunity are conditions related to the immune system. They occur when antigens activate immune cells. Allergies and autoimmune diseases follow a similar developmental way, though...

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link to Hypersensitivity Type III: Mechanisms and Clinical Manifestations

Hypersensitivity Type III: Mechanisms and Clinical Manifestations

Type III hypersensitivity reaction is an abnormal immune response mediated by the formation of antigen-antibody complexes or immune complexes. In general, hypersensitivity means an inappropriate or...

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link to Hypersensitivity Type IV: Mechanism and Clinical Manifestation

Hypersensitivity Type IV: Mechanism and Clinical Manifestation

Hypersensitivity is a body's response to a particular substance in an exaggerated way, which does not happen in normal cases. Hypersensitivity type IV is different from the rest of the other types of...

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link to Hypersensitivity Type II: Mechanism and Clinical Manifestation

Hypersensitivity Type II: Mechanism and Clinical Manifestation

Unlike Type I hypersensitivity, Type II hypersensitivity reaction is an immediate reaction, showing a "hyper" or exaggerated response to harmless antigens within 24 hours. Type II hypersensitivity...

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link to Hypersensitivity Type I: Mechanism and Clinical Manifestation

Hypersensitivity Type I: Mechanism and Clinical Manifestation

Various diseases result from inappropriate and immediate immune responses to common environmental components which are otherwise not harmful. Scientists Coombs and Gell have classified such responses...

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