develops from develops from CD8-positive, alpha-beta T cell CD8-positive, alpha-beta cytotoxic T cell cytotoxic T cell cytotoxic T-lymphocyte cytotoxic T lymphocyte killer T lymphocyte A CD8-positive, alpha-beta T cell that is capable of killing target cells in an antigen specific manner with the phenotype perforin-positive and granzyme B-positive. CD8-positive, alpha-beta cytotoxic T-lymphocyte CALOHA:TS-0190 killer T cell CD8-positive, alpha-beta cytotoxic T-cell Note that while T cells of this subset are loosely referred to 'cytotoxic T cells,' as many other T cell types, including CD4-positive, alpha-beta T cells and gamma-delta T cells exhibit cytotoxicity in vitro and in vivo. cytotoxic T-cell killer T-lymphocyte killer T-cell CD8-positive, alpha-beta cytotoxic T lymphocyte activated CD8-positive, alpha-beta T cell