Immediate Hypersensitivity Reactions Result When a First Exposure to Antigen

question 52

Multiple Choice

Immediate hypersensitivity reactions result when a first exposure to antigen results in

• A) activation of IgG-producing B cells.
• B) activation of IgE-producing B cells.
• C) the activation of CTL.
• D) an elevation of eosinophils.
• E) activation of IgA-producing B cells.

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Definitions:

Formaldehyde

A colorless, pungent gas used in building materials and household products, known for its preservative and antibacterial properties.

Primary Pollutants

Substances directly emitted into the environment that cause pollution in their original form without undergoing chemical changes.

Sulphuric Acid

A highly corrosive, dense, and oily liquid chemical used in various industrial processes, including fertilizer production and mineral extraction.

Nitric Acid

A highly corrosive mineral acid with the formula HNO3, widely used in the production of fertilizers and explosives.