Figure 2.
Calibration curves of 2-AB standard (⧫) and 2-AB-derivatized sialic acid (■). The error bars, which are present at every concentration point, are too small to see on some points.
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.