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Classification of Hypersensitivity Reactions by Mind Map: Classification of Hypersensitivity Reactions
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Classification of Hypersensitivity Reactions

Type I

Immediate hypersensitivity

IgE mediated response

Release of mediators result in:

Example

Developed in < 1hr after exposure to antigen

Type II

antibody-dependent cytotoxic hypersensitivity

The antigen-antibody complex activates cells that participate in antibody-dependent cell-mediated cytotoxicity, complement, or both.

Examples:

Type IV

Delayed hypersensitivity

T-cell mediated

T-cells are activated by re-exposure to antigen

Tissue damage through direct toxic effect or through the release of cytokines

Examples:

Type III

Immune complex disease

Antigen-antibody reaction

causes systemic immune response

Examples

Develops 4-10 days after exposure to antigen. If exposure to the antigen continues, can become chronic

Resources

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