Bonds Formed Between the T Cell and a Dendritic Cell

question 10

Multiple Choice

Bonds formed between the T cell and a dendritic cell are relatively weak.Which of the following help to strengthen this association so that a T cell can see which antigen is being presented by a dendritic cell?

• A)CD28/LFA-5
• B)CD 28
• C)ICAM-1/LFA-1
• D)IL-2R
• E)Pattern-recognition molecules

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Definitions:

Break-Even Point

The level of activity or sales volume at which total revenues equal total costs, resulting in no net loss or gain.

Automated Equipment

Machinery and tools that operate with minimal human intervention, often used to enhance efficiency in manufacturing or production processes.

Contribution Margin Ratio

A financial ratio that shows how much of a company's sales revenue is available to cover its fixed costs and contribute to net profit, calculated as contribution margin divided by sales revenue.

Fixed Costs

Fixed costs are business expenses that remain constant regardless of the level of production or sales, such as rent, salaries, and insurance.