Abstract
The adjuvant activity of avridine, a synthetic lipoidal amine, incorporated in liposomes, was studied in mice immunized orally with killed influenza virus vaccine (A/PR/8/34, H1N1). Coadministration of avridine-containing liposomes and viral antigen enhanced the remote-site IgA antibody response in the respiratory tract without a concomitant serum antibody response or side effects. The results support the possible use of mucosal adjuvants for oral immunization against respiratory pathogens.
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