The statements describe the cell-mediated immune response. Which statement is incorrect?
a) The cell-mediated immune response attempts to destroy body cells infected by viruses.
b) The cell-mediated immune response primarily involves T cells that have been activated by antigens.
c) When T cells encounter a matching antigen on a leukocyte, they become activated.
d) Cytotoxic T cells release lethal toxins when they encounter virus-infected cells.
e) Regulatory T cells end the cell-mediated immune response to prevent T cells from unintentionally attacking its own antigens.