All of the Following Protein-Protein Interactions Are Involved in Activation

question 10

Multiple Choice

All of the following protein-protein interactions are involved in activation of naive helper T cells by antigen-presenting cells (APCs) EXCEPT binding of:

• A) Peptide-MHC complexes on the APC to the TCR on the T cell
• B) CD4 on the T cell to nonpolymorphic regions of class II MHC molecules on the APC
• C) Integrins on the T cell with adhesion ligands on the APC
• D) B7-2 on the APC with CD28 on the T cell
• E) CD40L on the T cell with CD40 on the APC

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