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What is the name of the tissue reaction involving lymphocytes and mononuclear phagocytes in response to a soluble protein antigen, which reaches its peak intensity 24 to 48 hours after initiation?

A. Hypersensitivity reaction
B. Anaphylactic reaction
C. Immediate-type reaction
D. Allergic reaction
E. Delayed-type hypersensitivity

User FGiorlando
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1 Answer

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Final answer:

A. Hypersensitivity reaction. Delayed hypersensitivity is a type IV hypersensitivity reaction involving lymphocytes and mononuclear phagocytes. It reaches its peak intensity 24 to 48 hours after initiation and is a cell-mediated immune response.

Step-by-step explanation:

Delayed hypersensitivity, also known as type IV hypersensitivity, is the tissue reaction involving lymphocytes and mononuclear phagocytes in response to a soluble protein antigen. This reaction reaches its peak intensity 24 to 48 hours after initiation. The immune response in delayed hypersensitivity is cell-mediated and involves sensitized T cells secreting cytokines that recruit macrophages and phagocytes to the site of antigen exposure.

User Rityzmon
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