CCR1 and escherichia coli infection: In the GSE26887 dataset, CCR1 was mainly involved in biological processes such as negative regulation of release of cytochrome C from mitochondria and regulation of CD8 positive alpha beta T cell activation (Figure 6E) and KEGG pathways such as chemokine signaling pathway and pathogenic Escherichia coli infection (Figure 6F), whereas CD163 was mainly involved in biological processes such as maintenance of cell polarity and neutrophil mediated immunity (Figure 6G) and KEGG pathways such as chemokine signaling pathway and leukocyte transendothelial migration (Figure 6H).