Keywords: Ag; Antigen; APCs; Antigen presenting cells; AuNP; Gold nanoparticles; AVNs; Artificial virus nanoparticles; CLRs; C type lectin receptors; CTAB; Cetyltrimethylammonium bromide; CTL; cytotoxic T cells; CTLA-4; cytotoxic T lymphocyte associated protein 4;