CD4 and systemic lupus erythematosus: Thus, 86, 164 and 120 probe-sets were identified as SLE-specific in the CD4+ T cells, CD16− monocytes and CD16+ monocytes, respectively, whereas only very limited numbers of differentially expressed genes were identified as immunised ND-specific, with 0, 8 and 5 probe-sets in the CD4+ T cells, CD16− monocytes and CD16+ monocytes, respectively (Figure 2).