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PD-1 and LAG-3 expression in MSI and MSS colorectal cancer specimens.
PD-1 and LAG-3 expression in MSI and MSS colorectal cancer specimens. IHC analysis of PD-1 and LAG-3 expression in invasive front (A) and TIL/stroma (B) areas was performed on formalin-fixed, paraffin-embedded tissue sections of a representative set of MSI (top) and MSS (bottom) colorectal cancer specimens. Magnification, ×20; scale bars, 100 μm; red stars and blue arrows in B indicate the tumor stroma and tumor epithelium-infiltrating immune cells, respectively. Nicolas J. Llosa et al. Cancer Discovery 2015;5:43-51 ©2015 by American Association for Cancer Research
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