Figure 4: Inhibition of biofilm formation of S. sobrinus by GTF-I-specific IgG antibodies. S. sobrinus cells were pre-incubated with 5µg, 20µg or 40µg of IgG antibodies purified from serum of mice given PBS, GTF-I, or GTF-I plus CpG ODN and then incubated in the presence of sucrose. Results are expressed as the mean ± S.E. for six mice per group. *p<0.05, compared with PBS.