Which of the Following Mechanisms Does NOT Contribute to the Generation

question 8

Multiple Choice

Which of the following mechanisms does NOT contribute to the generation of a cytolytic T lymphocyte (CTL) response to a viral infection?

• A)Dendritic cells phagocytose infected cells or viral particles and present them to naive CD8⁺ T cells via the class I MHC pathway.
• B)Dendritic cells are infected with the virus and present viral peptides to naive CD8⁺ T cells via the class I MHC pathway.
• C)CTLs are directly activated by CD40L expressed on activated helper T cells through CD40.
• D)Helper T cells secrete cytokines,such as interleukin-2,that promote the proliferation and differentiation of CD8⁺ T cells.
• E)Helper T cells activate infected antigen-presenting cells (APCs)via the CD40 ligand-CD40 pathway,and the activated APCs present viral peptides to naive CD8⁺ T cells via the class I MHC pathway.

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Definitions:

White Blood Cell

Cells of the immune system that defend the body against both infectious disease and foreign materials.

Liver Cells

Also known as hepatocytes, these are the main cell type found in the liver, playing a vital role in metabolism, detoxification, and protein synthesis.

Golgi Apparatus

An organelle involved in the modification, sorting, and packaging of proteins and lipids for secretion or use within the cell.

Vesicles

Vesicles are small, fluid-filled sacs or bladders within or on the surface of cells, involved in transport, storage, or digestion activities.