CD4
+ CD25
+ regulatory T cells, isolated with the CD4
+ CD25
+ Regulatory T Cell Isolation Kit, were cocultured with CD4
+ CD25
- responder T cells in different ratios. For T cell stimulation, the Treg Suppression Inspector was added to the culture. As controls, CD4
+ CD25
+ Treg cells and CD4
+ CD25
- responder T cells alone were cultured without any stimulus. Proliferation of T cells was determined by measuring
3 H-thymidine incorporation.