TABLE 2.

MICs of antibiotics for bifidobacteria

Organism	MIC (μg/ml)a of the following antibioticb for the indicated organism:
	Amp	Clo	Pen	Van	Kan	Neo	Par	Str	Chl	Ery	Tet	Nis
B. animalis ATCC 27536	15.6	3.9	0.98	500	500	250	250	250	7.8	3.9	3.9	0.98
B. bifidum R0071	1.9	15.6	3.9	500	500	250	250	250	1.9	1.9	31.2	0.98
B. bifidum ATCC 15696	0.98	7.8	0.98	>500	>500	250	250	250	1.9	7.8	31.2	0.98
B. bifidum BB12	31.2	0.98	0.98	>500	>500	250	250	250	1.9	15.6	15.6	0.98
B. breve ATCC 15700	3.9	15.6	0.98	>500	>500	250	250	250	7.8	1.95	31.2	0.98
B. breve R0070	15.6	31.2	1.9	500	500	250	250	15.6	7.8	0.98	62.5	0.98
B. infantis ATCC 15697	7.8	15.6	0.98	>500	>500	250	250	250	62.5	15.6	125	0.98
B. longum ATCC 15707	15.6	15.6	0.98	500	500	250	250	250	15.6	0.98	62.5	0.98
B. longum ATCC 15708	7.8	7.8	0.98	500	500	250	250	250	31.2	3.9	31.2	0.98
B. longum R0175	7.8	62.5	3.9	500	500	250	250	62.5	7.8	0.98	62.5	0.98
B. longum P/N 601377	0.98	31.2	0.98	>500	250	125	250	125	3.9	0.98	15.6	0.98
B. pseudolongum ATCC 25562	3.9	3.9	0.98	>500	>500	250	250	250	7.8	3.9	15.6	0.98
B. thermophilum ATCC 25866	0.98	15.6	0.98	>500	>500	250	250	250	7.8	0.98	62.5	0.98

^aMedian of four repetitions.

^bAmp, ampicillin; Clo, cloxacillin; Pen, penicillin G; Van, vancomycin; Kan, kanamycin; Neo, neomycin; Par, paromomycin; Str, streptomycin; Chl, chloramphenicol; Ery, erythromycin; Tet, tetracycline hydrochloride; Nis, nisin A.