LEPI Cells (IMAGE) University of Eastern Finland Caption LEPI cell culture modeling realistic blood-retinal barrier of the eye. LEPI cells model the real-life retinal pigment epithelial layer of the eye by forming a tight epithelial layer and having hexagonal cell morphology like in the human eye (Confocal microscope image: cell nucleus is shown as blue and cell membrane as red). Credit Mika Reinisalo Usage Restrictions Please mention the credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.