Image Number 12 for United States Patent #5679355.
Non-ionic surfactant vesicles (NSIV) with entrapped antigen act as potent immunological adjuvants and can produce antibody titers of the same order of magnitude as those using Freund's Complete Adjuvant. The invention provides vaccines comprising such vesicles. Preferably non-ionic surfactants are glycerol esters particularly 1-monopalmitoyl glycerol. The vesicles may be administered by injection or via the mucosal route, oral administration being preferred.