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. 2020 Jan 15;10:308. doi: 10.1038/s41598-019-57093-4

Figure 4.

Figure 4

Difference in the rate of decrease in pH in culture media determines the rate of viability loss of V. cholerae strains. pH changes in cultures of isogenic strains that contain functional VC1589 or non-functional VC1589 in the presence of 1% glucose were compared. (a) N16961 (circle) and DHL001 (filled circle), (b) DHL003 (circle) and B33 (filled circle), (c) DHL006 (circle) and IB4122 (filled circle), and (d) DHL007 (circle) and IB5230 (filled circle).