Which Mechanism Is Not Important in Self-Tolerance

question 223

Multiple Choice

Which mechanism is not important in self-tolerance?

• A) clonal deletion
• B) activation by helper T cells
• C) clonal anergy
• D) receptor editing
• E) active suppression by regulatory T cells

---

Definitions:

Year 2

The second year in a specified timeframe, often used in financial and performance analysis.

Average Collection Period

A financial metric indicating the average number of days it takes for a company to receive payments owed by its customers.

Times Interest Earned

A financial ratio that measures a company's ability to meet its interest obligations, calculated as earnings before interest and taxes divided by interest expense.

Times Interest Earned Ratio

A financial indicator assessing a company's capacity to pay its interest costs using its earnings before interest and taxes.