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.
TEM of Stx phages from STEC O104:H4 strains. Shown are negatively stained phages with a short tail (arrowheads) and hexagonal head isolated from E. coli K-12 (C600) after infection with phage lysates of strains CB8983 (A), CB13344 (B), CB13771 (C), and CB13374 (D). Bars, 50 nm.
