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.
Synthesis of O-methyl groups specific for GPL 7 and GPL 12 in the terminal disaccharide. The structures asterisked in the figure were not detected in this study. Serotype 12-specific O methylations and ORFs responsible for their syntheses are indicated by black arrows.
