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.
Concentrations of IgG antibody (Ab) to capsular PS with (y axis) or without (x axis) additional preabsorption with an irrelevant pneumococcal capsular PS for preimmune sera or for postimmune sera. The serotype specificity of the antibodies is indicated at the top of each panel. The solid line indicates the identity, and the dotted line indicates the 50% reduction in antibody concentrations following preabsorption.
