The present invention is related to the fields of molecular biology, virology,immunology and medicine. The invention provides a composition comprising anordered and repetitive antigen or antigenic determinant array. The inventionalso provides a process for producing an antigen or antigenic determinant inan ordered and repetitive array. The ordered and repetitive antigen orantigenic determinant is useful in the production of vaccines for thetreatment of infectious diseases, the treatment of allergies and as apharmaccine to prevent or cure cancer and to efficiently induce self-specificimmune responses, in particular antibody responses.
