Figure 4. IgA antibody content in intestinal mucus of SPF chickens immunized with either NDV-CS-NPs orally, NDV-CS-NPs intranasally, LaSota live vaccine intranasally, blank CS-NPs control or physiological saline by oral route.
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.