An official website of the United States government
Here's how you know
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.
Isotype distribution for IgG1 and IgG3 in the two infant age groups: 6 to 10 weeks (n = 100) and 6 to 8 months (n = 100). IgG1, bars with diagonal lines; IgG3, shaded bars. Error bars represent standard errors of the means.