Figure 5. Growth of a P. gingivalis oxyR mutant in the absence of NaCl.

Overnight cultures of P. gingivalis parent and oxyR mutant strains were subcultured in medium with and without NaCl and grown anerobically at 37°C. Parent strain with NaCl: black diamonds; oxyR mutant with NaCl: black squares; parent without NaCl: black triangles; oxyR mutant without NaCl: black circles. A representative of at least three independent experiments is shown.