CD274 and breast neoplasm: The three off-the-shelf panels for human tissue were Tact (CD3, Ki67, Granzyme B and PanCK), PD-L1 (CD8, CD68, PD-L1 and PanCK) and APC (CD11c, CD20, CD68+CD163 cocktail and MHCII) panels, which were evaluated on human breast tumor specimens with varying levels of T cell density.