Why is understanding MHC and antigen presentation crucial for developing effective vaccines?

• A. It prevents the activation of any immune cells, reducing side effects.
• B. It ensures that vaccines can bypass the immune system entirely.
• C. It helps in designing vaccines that can effectively present antigens to the immune system, leading to a robust immune response.
• D. It allows for the direct destruction of pathogens without the need for immune activation.

Answer: (C)