Surface proteins of Lactobacillus salivarius Lv72 separated by means of heparin-affinity chromatography (A, C, E) and ionic interchange chromatograpy (B, D, F). A,B) Chromatograms. The mark shows the fractions of interest that were tested further. C,D) Adherence interference experiments: inhibitory effect of the fractions on Lv72 binding to HeLa cells. E,F) SDS-PAGE of the isolated fractions. n=6 ANOVA test **, p-value < 0.001.