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Reproducibility and repeatability of topoI-pS10 immunohistochemical staining assay: FFPE serial sections from topoI-pS10 negative CRC tissue (tissue ID 298) and topoI-pS10 positive breast cancer (tissue ID 1395) were immunostained on different dates by 2 different operators using the SOP on Intellipath IHC platform. Scale bar = 100 µm. Abbreviations: topoI-pS10, topoisomerase I phosphorylates at serine 10; CRC, colon cancer; SOP, standard operating procedure.
