Cochleates represent a powerful subunit vaccine delivery system, uniquely suited to meeting the challenges of modern vaccine development. The intrinsic properties of cochleates lead to advantages in the important areas of safety, stability, efficacy, immune response targeting, combining vaccines to multiple infectious agents, alternate routes of administration (including oral and intranasal), and the generation of mucosal immunity. Cochleates are alternating layers of cations and negatively charged lipids, in stacked sheets or rolled scrolls, with little or no internal aqueous space. Bacterial membrane proteins or the surface glycoproteins of enveloped viruses can be efficiently integrated into the lipid bilayers of the cochleates. The current study investigated the relative amounts of the different classes and subtypes of antibodies generated in mice in response to the oral administration of influenza glycoprotein cochleates. Analysis of circulating antibody revealed significant levels of flu gly...