Figure A1.
Dimensions of the microchannels for trans-epithelial electrical resistance (TEER) measurement. (A) Upper channel. (B) Lower channel. (C) Magnified view of (B), showing dimensions of multi-channels. (D) Top view of the assembled TEER device. (E) Experimental set-up for TEER measurement showing the connection between the microfluidic device and the EVOM instrument.