A method immunizing an individual that minimizes the amount of antigen or attenuated organism needed and the number of doses and clinic visits required, while making possible polyvalent simultaneous immunizations. The method comprises the steps of obtaining a sample of blood. Exposing at least a portion of this sample to at least one immunogenic antigen, attenuant or other immunogen. Incubating the exposed sample under specified optimal conditions and introducing this exposed sample into the individual to effect immunization thereof. The method of the invention also provides a method of delivery of materials, other than antigens, throughout an individuals body such as therapeutic drugs, virus vectors, genes, DNA, RNA, isotopes, and other therapeutic substances. A method for the delivery of treatment material to an individual is also provided by this method.
