The Following Are Steps in the Cell-Mediated Immune Response

Multiple Choice

The following are steps in the cell-mediated immune response. What is the correct sequence for these steps?
1) Several cycles of mitosis occur.
2) Antigen is engulfed and presented by a macrophage.
3) Cytotoxic T cells migrate to focus of infection.
4) T cells with specific receptors recognize the antigen.
5) T cells differentiate into cytotoxic T cells or T memory cells.
6) Cytotoxic T cells release perforin and/or lymphotoxin.

A) 4, 1, 5, 3, 6, 2
B) 2, 4, 1, 5, 3, 6
C) 1, 2, 4, 5, 3, 6
D) 3, 2, 4, 1, 5, 6
E) 3, 6, 4, 5, 1, 2