CF

U/m

L

Online Supplementary Figure 2. GBS strain A909 survival in extended stationary phase. GBS was cultured as standing cultures at 37°C and periodically sampled for viable CFU/mL determination by serial dilution and plating on THA. As 100 µL from 10-4-10-6 sample dilutions were plated, the limit of detection was 105 CFU/mL. Results show mean and SD from triplicate experiments. ■, pH 7 THB; ♦, pH 5 THB.

1.00E+05

1.00E+06

1.00E+07

1.00E+08

1.00E+09

0 1 2 3 4 5 6 7 8

pH 5

pH 7

Time (weeks)