To Avoid Returning to the Lymph Nodes, Effector Cells

question 21

Multiple Choice

To avoid returning to the lymph nodes, effector cells

• A)up-regulate chemokine receptors to allow them to home in to site of infection.
• B)down-regulate L-selectin, so they do not enter the high-endothelial venules (HEVs).
• C)down-regulate chemokine receptors, so they do not enter the high-endothelial venules (HEVs).
• D)up-regulate chemokine receptors and downregulate L-selectin.
• E)down-regulate both L-selectin and chemokine receptors.

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Definitions:

Standard Deviation

A statistical measurement that depicts the variability or spread of a set of data points or investment returns around their mean.

Diversification

An investment strategy aimed at reducing risk by allocating investments among various financial instruments, industries, and other categories.

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A collection of different types of investments (such as stocks, bonds, commodities, etc.) that an individual or institution holds.

Unsystematic Risk

The risk associated with a specific company or industry, which can be mitigated through diversification.