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.
Plasma samples were assessed to measure the concentrations of total IgG and IgG subclasses, IgG1 and IgG2 respectively. The quantity of each IgG was determined by comparing the absorbance observed for known quantities of positive controls. The values were presented as bars representing mean values ± SD. (Total IgG, gray bars; IgG1 black bars; IgG2 open bars).
