Results presented Figs 3 and 4 indicate that chlamydial infection of primary reproductive epithelial cells caused the downregulation of markers associated with normal epithelial integrity (E-cadherin and Occludin) (panel 2A) and the upregulation of mesenchymal markers (Snail1/2, Fibronectin, MMP9, T-Cadherin and ZEB1)(panel 2B) as an indication of EMT induction. Here, MMP9 is linked to chlamydia trachomatis infectious disease.