Volume 8, Issue 16, Pages R551-R553 (July 1998)

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Volume 8, Issue 16, Pages R551-R553 (July 1998) DNA vaccines  Philip L. Felgner  Current Biology  Volume 8, Issue 16, Pages R551-R553 (July 1998) DOI: 10.1016/S0960-9822(07)00358-2

Figure 1 Results of an experiment in which mice were vaccinated with either plasmid DNA encoding influenza virus antigen (red) or ‘control’ blank plasmid (blue). The mice were then challenged with influenza virus. All the control mice died and all those vaccinated with influenza antigen survived. Current Biology 1998 8, R551-R553DOI: (10.1016/S0960-9822(07)00358-2)

Figure 2 (a) The gene for a microbial antigen is cloned in a plasmid. (b) The cloned gene is injected into muscle tissue. (c) The plasmid is expressed in muscle cells and the antigen it encodes is presented on the muscle cell surface by MHC class I molecules. Some intact antigen also escapes out of the muscle cell into the extracellular space. The details of how antigen stimulates the immune response are not completely understood. It is not known how antigen escapes the muscle cells and eventually stimulates antigen-presenting cells, or whether there is any role for processed antigen on the muscle cells in stimulating the immune response. Current Biology 1998 8, R551-R553DOI: (10.1016/S0960-9822(07)00358-2)