Light micrograph showing the peri-implant soft tissue adherent by the blue junctional epithelium (JE) to the titanium surface of a dental implant. The JE is located at the strategically important interface between the peri-implant sulcus, populated with bacteria, and the soft and connective tissues that need protection from exposure to bacteria and their products. Its unique structural and functional adaptation enables the junctional epithelium to control the constant microbiological challenge. Magnification: x250 when printed at 10 centimetres tall.