Natural Killer Cells

question 55

Multiple Choice

Natural killer cells

• A)are activated by IL-2 and interferon-gamma.
• B)only attack bacteria.
• C)cannot interact with antibodies.
• D)secrete interferon-gamma to activate helper T-cells.
• E)have primary responsibility for mass-manufacturing antibodies against foreign antigens.

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Definitions:

Economically Efficient

A situation in which resources are distributed in a manner that maximizes overall societal benefits.

Production Techniques

The methods and processes employed in the manufacturing of goods or provision of services, often aimed at improving efficiency and productivity.

Labor and Capital

The primary factors of production where "labor" refers to workforce efforts and "capital" denotes tools, machinery, and buildings used in production.

Creative Destruction

A process in which new inventions and technologies create new industries and ways of doing things, leading to the demise of older industries and practices.