The Induction Phase of a Cell-Mediated Immune Response Includes Which $\gamma$

Multiple Choice

The induction phase of a cell-mediated immune response includes which of the following events?

A) CD4⁺ T cell secretion of interferon- $\gamma$ leading to macrophage activation
B) CD8⁺ T cell lysis of a virally infected cell
C) Clonal expansion of CD8⁺ T cells within a lymph node
D) Migration of CD4⁺ effector T cells from blood vessels into a tissue site of infection
E) Migration of a naive CD4⁺ T cell from the thymic medulla into the circulation