Another way the Dendritic Cell can activate a Killer T Cell is by straight up being infected by the virus itself. Just like a regular cell, the Dendritic Cell presents samples of the virus in its MHC class I molecules and can still tell the adaptive immune system: “Look, there is a pathogen that infects cells, even I am infected, mobilize special forces especially for that type of enemy.” To enhance the chance that this happens, Dendritic Cells that sense the chemical warfare triggered by virus infections massively produce more display windows, to become super, extra transparent.
