CD4 and colorectal carcinoma: To further determine the suppressive capacity of ST2L+Treg orST2L−Treg cells, we sorted ST2L+CD4+CD25+ (R5in Figure 6A, ∼98% purity) andST2L−CD4+CD25+ (R4 in Figure 6A, ∼99% purity) T cells from CRC tissue(Figure 6A-C).