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. 2004 Jun;72(6):3418–3428. doi: 10.1128/IAI.72.6.3418-3428.2004

FIG. 9.

FIG. 9.

Serum susceptibility of single dltA and double dltA dsrA H. ducreyi mutants in 50% NHS (A) and 10% NHS (B) and the serum susceptibility of H. influenzae strain Rd expressing dltA in 5% NHS (C). Strains were mixed with either heated NHS (ΔNHS) or fresh (fNHS) for 45 min at 35°C, and viable counts were determined by plating. The data are expressed as percent survival in fNHS compared to survival in ΔNHS [i.e., (the number of CFU in fNHS/the number of CFU in ΔNHS) × 100]. The data are compiled from separate experiments performed on at least three different days. The asterisk denotes statistically different survival rates between the indicated strain and the parent strain (35000HP for panels A and B and H. influenzae strain Rd complemented with pLSKS for panel C). The double asterisk denotes statistically different survival rates between FX534 and FX517 (in panel B).