Abstract: The invention relates to a method for obtaining aggregated antigenic structures that are capable of enhancing an immune response to aggregate antigens administered systemically and/or mucosally generating powerful immune response and to the chemical structures resulting from the application of said method, to the formulations obtained from such structures and their use. The method describes the obtention of novel aggregate antigenic structures by using aggregating, delipidating or oxidating agents or compounds enabling the release of lipids from the particles and their heterogeneous aggregation, wherein aggregates with particle sizes of between 30 and 500 nm are subsequently selected by means of a molecular exclusion process. The aggregation state can also be provoket inside the yeast by changing incubation conditions.

Abstract: The present invention is related to the method for obtaining aggregated antigenic structures that are capable of enhancing an immune response to aggregate antigens administered systemically and/or mucosally generating powerful immune response and to the chemical structures resulting from the application of said method, to the formulations obtained from such structures and their use. The method describes the obtention of novel aggregate antigenic structures by using aggregating, delipidating or oxidating agents or compounds enabling the release of lipids from the particles and their heterogeneous aggregation, wherein aggregates with particle sizes of between 30 and 500 nm are subsequently selected by means of a molecular exclusion process. The aggregation state can also be provoket inside the yeast by changing incubation conditions.