Fig. 4From: Expression and clinical significance of PD-L1, B7-H3, B7-H4 and TILs in human small cell lung Cancer (SCLC)Levels of TIL subpopulations in SCLC. Distribution of CD3 (red), CD8 (green) and CD20 (magenta) QIF scores in SCLCs from the Yale cohort. Cases were stratified using the median score of each marker as stratification cut-point. AU = Arbitrary units of fluorescenceBack to article page