.A modified T-cell ( or ) binds to an antigen-bearing cell and when stimulated by the cytokines, first proliferates (clones into many cells) then

.A modified T-cell ( or ) binds to an antigen-bearing cell and when stimulated by the cytokines, first proliferates (clones into many cells) then produces , a substance which enzymatically dissolves the cell membrane of the pathogen.