Fig. 1. PD-L1 expression in aged tissue and tissue under accelerated conditions.
Representative PD-L1 expression assessed by E1L3N IHC in FFPE gastric carcinoma under normal atmospheric conditions (a–c) and in NSCLC under acceleration conditions (d–f). a Day 0, b 4.5 months, c 24 months; d Day 0, e Day 9, f Day 28. PD-L1 programmed-death-ligand-1, IHC immunohistochemistry, FFPE formalin-fixed, paraffin embedded, NSCLC non-small cell lung cancer.