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.
Phylogenetic tree showing the relationship of 16S rDNA sequences cloned from the middle-level sample compared with previously described bacterium species rDNA sequences deposited in public databases. Synechococcus sp. WH 8109[AY172836] as outgroup.
