1.activates antigen specific helper T cell to produce a clone of these cells by IL-2
2.activates cytotoxic T cells by IL-2
3.activates B cells by IL-4 and IL-5
4.activates macrophages by gamma interferon
1.activates antigen specific helper T cell to produce a clone of these cells by IL-2
2.activates cytotoxic T cells by IL-2
3.activates B cells by IL-4 and IL-5
4.activates macrophages by gamma interferon