TABLE 2.
Serum resistance is influenced by growth conditions
| % Survivala of bacteria exposed to:
| ||
|---|---|---|
| Growth condition | 40% pooled human serum | 80% pooled human serum |
| BHI | 60 ± 13.2 | 0.30 ± 0 |
| BHI–50% NBS | 1,048 ± 114.5 | 439.5 ± 5.7 |
| BHI–0.2 M NaCl | 15.4 ± 1.3 | 0.09 ± 0 |
a
Bacteria were grown in medium alone or with the indicated supplements and assayed for serum resistance as described in Materials and Methods. Values are the average ± SD of a single representative assay (% survival) performed in triplicate and reflect similar results from numerous experiments.