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.
Restriction digests of phages F7, F9, γ, and Fah. Genetic variation was assessed by digestion of genomic DNA using restriction enzymes NdeI and XhoI. Phages F7 and F9 were found to be genetically distinct from γ and its variant, Fah. Lane L contains molecular size standards (in kilobases).
