TABLE 1.

PA14 clonal MIC from the ceftazidime evolution study^∗.

Population	Clone number	Clonal MIC (fold increase)		pH-induced fold increase
		pH 6.5	pH 7.5
Biofilm pH 6.5 population 1 (B1)	B11	64	4	16
	B12	80	4	20
	B13	64	4	16
	B14	94	6	15.7
Biofilm pH 6.5 population 2 (B2)	B21	96	10	9.6
	B22	96	24	4
	B23	96	24	4
	B24	128	32	4
Biofilm pH 6.5 population 3 (B3)	B31	6	4	1.5
	B32	4	4	1
	B33	6	4	1.5
	B34	8	4	2

^∗Ceftazidime MIC against PA14 ancestor: 1.25 μg/mL.