Table 4.

Antimicrobial activities of Api137 and Api137 (R4A) against clinically relevant Gram-negative pathogens^a

Pathogen	No. of tested strains and isolates	MIC (μg/ml) range
		Api137	Api137 (R4A)
E. coli	8	0.5	0.25–0.5
K. pneumoniae	6	0.25–0.5	0.25–1
P. aeruginosa	8	2–8	4–16
A. baumannii	5	1–2	0.5–1
E. cloacae	5	0.25	0.25–0.5
P. vulgaris	5	0.125–2	0.25–4

^aFor further details, see Table S2 in the supplemental material.