    Sentence 1: What is the receptor that killer  T'cells use to, bind;to. specific:antigens that  are. complexed’. with: the ~MHC™.Class-.1  teceptor.of another cell? 2    Sentence: 2:Killer T-cells are activated wheit  their, T' cell: receptor’ (TCR) -binds: to’. this  Specific:antigen in a complex with the MHC  Class | receptor of another cell.