On the other hand, cytotoxic T cells are part of the adaptive immunity. And that's because they are looking for specific infected cells, which also includes cancer cells that contain specific foreign antigens on the membrane. So these cytotoxic T cells actually need the MHC class One to bind onto that infected or abnormal cell. So these cytotoxic T cells contain special T cell receptors along with a CDA Glycoprotein that is needed to bind to the MHC Class One complex. So let's take a look at the following diagram to see what the mechanism is by which the cytotoxic T cell actually kills off and finds finds and kills off that cancer cell. So we have normal cells of our body that display the normal cell antigen shown in green on that MHC class One complex.