Massachusetts Institute of Technology May 13 2026 MIT engineers have developed a new way to amplify the T-cell response to mRNA vaccines - an advance that could lead to much more powerful cancer vaccines and stronger protection against infectious diseases. Most vaccines generate both antibodies and T cells that can target the vaccine antigen by activating antigen-presenting cells, such as dendritic cells. In this study, the researchers boosted the T-cell response with a new type of vaccine