FIG. 9.

Effect of aerobic growth and DNase treatment on the aggregation of the S. sanguinis wild type and the Pox⁻ mutant. (A) Overnight cultures of the wild type and the Pox⁻ mutant obtained after further static incubation has resulted in aggregation of the wild type but not the Pox⁻ mutant strain. (B) Aggregation inhibition by DNase treatment of wild-type cells during anaerobic growth. Data presented are the means ± SD of results from two independent experiments done on different days. (C) H₂O₂-induced aggregation of the S. sanguinis Pox⁻ mutant.