Vitreous compositions of an antigen and adjuvant, and methods for making thecompositions are disclosed. Also disclosed are pharmaceutically acceptableformulations of the vitreous compositions, reconstituted liquid formulationsof the vitreous compositions, vaccine compositions, and kits containing thevitreous compositions. Also disclosed are devices for administering the vitreouscompositions to mammals and methods for eliciting an immune response in mammalsby administering the compositions.