Regarding T cell and antigen presenting cell (APC) interactions,name a pair of proteins that mediate the initialinteraction between these cells.  In your answer,indicate which protein is expressed by the T cell and which proteinis expressed by the APC.
Answer Part b i and ii.
The interaction between these proteins becomes stabilized insome cases, thereby prolonging the cell-cell contact.
i.  What event triggers the interaction between theseproteins to become stabilized?
ii. How does the interaction between these proteins becomestabilized i.e. what’s the mechanism?
This is how the question was asked... im not sure how he wantsit exactly but anything will help.
