An antigen presenting composition comprising a plurality of 2-component MHC class I complexes and a carrier is described. A method for activating a group of antigen-specific CD8+ T cells comprising incubation of a group of naïve CD8+ T cells with the antigen presenting composition is also presented. A method for inducing the proliferation of a group of antigen-specific CD8+ T cells comprising incubation of a group of naïve CD8+ T cells with the antigen presenting composition is further described.