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.
Structure of unusual circular viral DNAs. (A, B) U3 is indicated by a light gray box; R is indicated by a black box; U5 is shown by a dark gray box. The cassette is indicated by a box with slashes. Deletions in the LTR are indicated by a black jagged end. Six nucleotides at the viral/host DNA junctions are shown, and a microhomology with the host DNA is indicated by a bold capital letter. The captured host DNA segments are indicated by white boxes.
