CD4 and systemic lupus erythematosus: (ii) IP-10: Significantly higher IP-10 levels of 4,941 ± 140 pg/ml and 7,505 ± 33 pg/ml were secreted by SLE-PBMCs alone at days 3 and 7, respectively, when compared to CD4+CD25+CD127low UCB-Tregs alone levels of 22 ± 2 pg/ml and 33 ± 2 pg/ml at the same time points (p < 0.0001).