Fig. 3.
Competition of radioiodinated SLPI binding with unlabeled SLPI. 0.5 nmol/L radioiodinated SLPI plus increasing amounts of unlabeled SLPI were added to monocytes in binding buffer overnight at 4°C. Cells were washed twice with PBS, and cell pellets were assayed for 125I emission. Values shown are the mean of a data set in triplicate. Inset, data replotted by Scatchard method.