Fig. 3
From: The Ussing chamber system for measuring intestinal permeability in health and disease
Electrical measurements. a Current pulse stimulation event protocol created in LabChart software. b Diagram showing current stimulation traces and tissue PD response. c Least fit squares analysis based on Ohms law. Current stimulation is plotted against tissue voltage. Linear regression is equal to TER. The y-intercept equals the PD value of tissue and Isc can be calculated by PD/TER