Infographic:  Methods to Assess Barrier Integrity and Permeability in 3D Tissue  Models    This infographic provides a comparative overview of two key methods for  assessing barrier function in 3D tissue models cultured within the  OrganoPlate platform:​    Transepithelial/Transendothelial Electrical Resistance (TEER): A  label-free, real-time method for quantifying barrier integrity.    Barrier Integrity (BI) Assay: A fluorescent dye-based technique for  visualizing and measuring permeability.​    Both methods are compatible with perfused tubule models and offer  complementary insights into tissue barrier performance.