Three adhesins, Epa1, Epa6, and Epa7, contribute to cell adhesion. (A) Adhesion force and rupture length histograms with representative retraction force profiles for three different cells of the ura3Δ sir3Δ epa1Δ epa6Δ epa7Δ mutant strain with all three adhesins genes deleted. (B to D) Force data obtained for the interaction of the ura3Δ sir3Δ epa6Δ epa7Δ (B), ura3Δ sir3Δ epa1Δ epa7Δ (C) and ura3Δ sir3Δ epa1Δ epa6Δ (D) mutant strains. For results on more cells, see Fig. S2.