TABLE 1.

Susceptibility of strain PV-4 to nine antibiotics

Antibiotic	Concn (μg/ml) of antibiotic at which strain PV-4 isa:
	Resistant	Intermediate resistant	Susceptible
Ampicillin	1,000	ND	ND
Chloramphenicol	1	2	4
Erythromycin	1	2	4
Gentamycin	2	5	10
Kanamycin	2	5	10
Rifampin	ND	1	2
Spectinomycin	10	20	40
Streptomycin	10	20	40
Tetracycline	ND	1	2

^aND, no data.