Figure 2.

Survival in serum depends on the T2SS. (A) Cells from overnight cultures were washed and incubated for 30 min at 37°C with either 50% normal human serum or heat-inactivated serum. Cells were plated for CFUs following incubation. ^*p < 0.05 by Student t-test; n = 3. (B) Cells from overnight cultures were washed and incubated as above with Factor B deficient, C1q deficient, or heat-inactivated serum. n = 3, ^***p < 0.001 by Student t-test.