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Questions and Answers
What is the main function of a cytotoxic T cell?
What is the main function of a cytotoxic T cell?
What type of molecule is capable of stimulating an immune response?
What type of molecule is capable of stimulating an immune response?
What must accompany the T-cell receptor (TCR) in order for it to bind to the class I MHC molecule?
What must accompany the T-cell receptor (TCR) in order for it to bind to the class I MHC molecule?
Which molecule brings antigens inside a cell to the cell's surface for recognition by T cells?
Which molecule brings antigens inside a cell to the cell's surface for recognition by T cells?
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What keeps the cytotoxic T cell and the target cell bound closely together during antigen-specific activation?
What keeps the cytotoxic T cell and the target cell bound closely together during antigen-specific activation?
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Study Notes
Cytotoxic T Cells
- Main function is to identify and eliminate infected or cancerous cells through the release of cytotoxic substances.
- Play a critical role in the adaptive immune system, specifically targeting cells presenting foreign antigens.
Immune Response Stimulation
- Molecules capable of stimulating an immune response are called antigens.
- Antigens can be proteins, polysaccharides, or other complex molecules recognized by the immune system.
T-Cell Receptor Binding
- A co-receptor, specifically CD8 for cytotoxic T cells, must accompany the T-cell receptor (TCR) to effectively bind to class I MHC molecules.
- The interaction enhances the specificity and strength of the T-cell response.
Antigen Presentation
- Molecules called Major Histocompatibility Complex (MHC) bring antigens from within a cell to its surface.
- This presentation allows T cells to recognize and respond to specific antigens.
Antigen-Specific Activation
- An immunological synapse forms between the cytotoxic T cell and the target cell during antigen-specific activation, maintaining close contact.
- This synapse involves various adhesion molecules that stabilize the interaction for effective immune response.
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Description
Test your knowledge of cytotoxic T cells and their role in the immune system with this quiz. Explore topics such as T-cell receptors, cancer cell destruction, and immune response to intracellular pathogens. Ideal for biology and immunology enthusiasts.
