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 using the amino acid sequences of type I topoisomerases from L.donovani and other organisms. The phylogram is displayed on TREEVIEW that reads PHYLIP format treefiles under the CLUSTAL W program. The evolutionary scale bar is shown on the left, which indicates the relative distance on the tree in arbitrary units.
