TABLE 2.

Antibacterial spectrum of the antibiotic WS-5995 B as determined by the agar plate diffusion assay

Organism	Inhibition zone diam (mm) with WS-5995 B at a concn of:
	1 mg/ml	0.3 mg/ml	0.1 mg/ml
Arthrobacter aurescens DSM 20166	15	12	7
Bacillus subtilis DSM 10a	15	10	8
Bacillus subtilis DSM 10b	24	17	9
Brevibacillus brevis DSM 30	15	10	7
Staphylococcus aureus DSM 20231	15	10	7
Streptococcus pneumoniae ATCC 49619	10
Streptomyces viridochromogenes Tü 57	27	16	10
Haemophilus influenzae ATCC 49766	25	19	14

^aInhibition zone diameters were determined in complex medium.

^bInhibition zone diameters were determined in chemically defined medium.