Fig. 4From: Increased circulating Tfh to Tfr ratio in chronic renal allograft dysfunction: a pilot studyThe frequency of cTfr cells, cTfh to cTfr ratio and the expression of ICOS between DSA positive group and stable group. Squares refer to donor specific antibody (DSA) group, cycles refer to stable renal function group; a cTfr: CXCR5+Foxp3+ on CD4+ cells; b cTfh to cTfr ratio; c CXCR5+ICOS+ on CD4+ cells; d ICOS+ on CXCR5+CD4+Back to article page