CD4 and CD8 Are

question 9

Multiple Choice

CD4 and CD8 are

• A) proteins secreted by antigen-presenting cells.
• B) receptors present on the surface of natural killer (NK) cells.
• C) T-independent antigens.
• D) molecules present on the surface of T cells where they interact with MHC molecules.
• E) molecules on the surface of antigen-presenting cells where they enhance B cell activity.

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Definitions:

Vasoocclusive Crisis

A painful condition primarily affecting people with sickle cell anemia, where sickle-shaped red blood cells block blood flow through the vessels, causing pain and organ damage.

Pneumonia

A lung infection characterized by inflammation of the air sacs in one or both lungs, which can be caused by bacteria, viruses, or fungi.

Intravenous (IV) Line

A medical device used to deliver fluids, medications, or nutrients directly into a vein.

Manipulated

Handled, managed, or controlled in a skillful manner, often to achieve a desired outcome.