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.
“a” stands for genes related to precursor biosynthesis; “b” stands for genes responsible for the assembly of the repeat units; “c” indicates genes related to the polymerization and export of sanxan polysaccharides; “d” is the ssA gene.
