Although MHC I and MHC II signaling pathways are triggered by different pathogens and use different molecules, some of these molecules perform very similar functions. Which of the following statements does NOT describe a similarity in function between molecules in each pathway?

MCQs on the immune system, including innate and adaptive immunity, the cells involved in each of process of the immune system and their role in the immune response, and how antibodies are used to confer immunity for future potential exposures.