Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Halo-formation assay for assessing the antibiotic activity of 2, 3 and 14. A tryptic soy agar plate plated with B. subtilis was spotted with (a) 2, (b) 3 and (c) 14. Each well contained the corresponding compound at an incremental amount of 2: 1.0 ng; 3: 2.0 ng; 4: 4.0 ng; 5: 8.0 ng and 6: 16 ng. Well 1 is a negative control.
