In vitro induction of sB7-H6 from human monocytes and neutrophils. (A) Freshly isolated monocytes or (B) freshly isolated neutrophils were treated with LPS or IL-1β for the indicated time points. Concentrations of sB7-H6 were measured in the cell supernatant by ELISA. Each symbol represents 1 individual donor. Graph represents 9 healthy individuals donors for monocytes and 6 healthy individuals donors for granulocytes.