CCL20 and sexually transmitted disease: Specifically, we measured transcript levels of TLRs 7 and 9, several type III IFN-related genes (IFN lambda 1, 2, and 3, IFNLR1, and the IFN-stimulated gene ISG15), and the chemokines CCL5 and CCL20 in cervical cells in response to HPV, in the presence or lack thereof of BV and other STIs.