CD163 and neoplasm: The strongest correlations were between B7H3, CD163, and Src, all of which are expressed by Kupffer cells and have been linked to tolerogenic M2 polarization of macrophages, particularly within the tumor microenvironment (Sun et al., 2012; Kang et al., 2015; Mao et al., 2017; Ge and Ding, 2020).