Fig. 5. Typical force curves and histograms for the different cell types and experimental conditions. (A) Force curves for wild-type cells, wild-type cells plus RGD peptide and slb/wnt11 cells adhering to a fibronectin substrate for a contact time of 5 seconds. (B) Corresponding relative count histograms of the detachment forces for wild-type and slb/wnt11 cells on fibronectin. As explained in the text and in the legend to Fig. 6, these data were evaluated by extracting the mean and the s.d. SLB, slb/wnt11; RGD, RGD peptide; WT, wild type.