Fig 1. Coaggregation of S. gordonii DL1 (wt) and surface protein mutants with V. atypica OK5.
Coaggregation-positive pairs form aggregates that precipitate at the bottom of the tube (arrowhead), while cells of the single species cultures or mixed cultures with the hsa and srtA mutants remain in suspension. Sg: S. gordonii DL1; Va: V. atypica OK5.