Effect of overexpression of various CKIs on the expression of the monocyte/macrophage-specific membrane marker CD11b, independent of 1,25(OH)₂D₃. Transfections and FACS analyses were performed as described in Fig 4 and quantitated by determining the product of the mean CD11b expression levels and the percentage of CD11b-positive cells. Each value is the mean of a minimum of four independent experiments. The effect of the empty CMV control vector was set at 1 for each individual experiment to enable comparison of different experiments.