TEER
The TEER of IL-13-matured hNECs was measured from Day3 to Day21 of ALI culture by using an EVOM voltammeter device with STX2 electrode (WPI, Sarasota, FL, USA). TEER was calculated by subtracting blank value. The total TEER (ohms·cm2) is presented by TEER measurement (ohms) × Area of a membrane (cm2).