In particular, mRNA expression of the chemokine genes CXCL10, CCL5 (C-C motif chemokine ligand 5), and CCL20 (C-C motif chemokine ligand 20) was significantly up-regulated and this could help recruit other immune cells such as lymphocytes and dendritic cells to the infection sites for pathogen removal. Here, CCL20 is linked to infection.