Figure 4. Expression of costimulatory molecules on ILT4⁺ and ILT4⁻, CD40L-stimulated monocyte subsets.

The box plots represent the expression of ILT4 analyzed by FACS on CD14⁺ gated cells as percentage of positive cells. Controls with isotype matched irrelevant mAbs consistently showed <1% of positive cells. The data represent means±SD (error bars) Comparison between means was performed by Student's unpaired t test.