Which of the Following Represents the Best Explanation for the Action

question 17

Multiple Choice

Which of the following represents the best explanation for the action of natural killer (NK) cells?

• A) They recognize specific antigen.
• B) They kill if MHC class I is present.
• C) They kill by releasing perforins.
• D) They participate in phagocytosis.

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Definitions:

Interest Income

Income earned by an individual or company from lending money or from investments in interest-bearing accounts.

Capital Gains

The profit from the sale of an asset or investment.

Average Tax Rate

The percentage of total income that is paid in taxes.

Interest Income

Earnings from investments in interest-bearing accounts, bonds, or other financial instruments that pay periodic interest.