PRL and staphylococcus aureus infection: A Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of the intersecting genes identified 15 immune-associated pathways, encompassing the TNF signaling pathway, Staphylococcus aureus infection, prolactin signaling pathway, epithelial cell signaling in Helicobacter pylori infection, and leukocyte transendothelial migration (Figure 4C).