CD163 and neoplasm: Moreover, we have noticed that CD163 protein expression ratios (tumor/control) were sample-wise positively correlated to immune infiltrate level in hematoxilin and eosin (HE) slides i.e. reduced immune infiltrates were correlated with low CD163 ratios (0.0–0.5), moderate immune infiltrate with intermediate CD163 ratios (0.5–4.0) and large immune infiltrate with CD163 ratios (4.0–6.0).