A Small Amount of Antigen Is Injected Under the Skin

question 33

Multiple Choice

A small amount of antigen is injected under the skin of a patient. After 30 minutes there is no apparent change at the injection site, but 36 hours later the patient reports that the area is red and swollen. This type of response is due to

• A) type I hypersensitivity.
• B) type II hypersensitivity.
• C) type III hypersensitivity.
• D) type IV hypersensitivity.
• E) immunodeficiency.

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Definitions:

Price Up

An increase in the cost of goods or services in the market.

Shortages

A situation in which the demand for a product or service exceeds its supply in a market.

Demand

The desire and ability of consumers to purchase goods and services at given prices.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a given price within a specific time period.