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.
Schematic representation of the gene fragment obtained in this study. Primers for PCR are indicated by arrows. Thick lines are DNA fragments obtained in this study. Hatched boxes represent gene fragments used for hybridization. The open triangle shows the position where the kanamycin or tetracycline resistance gene was inserted for mutation. ORF-5 is not complete.
