But what the infected cell also does is it takes a piece of that virus, some type of antigen and places it onto the major histocompatibility complex, class one as shown in the diagram. So this is the MHC class one of the infected cell. And this green portion is the antigen that came from the viral agent that infected our cell. Now, once the cell is infected and once the infected cell displays the antigen, when the CD eight T cell, for example, the cytotoxic T cell approaches this, the CD eight glycoprotein can bind onto this MHC class one complex. And this T cell receptor recognizes this antigen. And when the binding process takes place, what the CD eight T cell usually does is it begins to release these very powerful proteolytic proteins that begin to drill holes and digest our membrane of that infected cell.