Table 1—

Adhesive characteristics of various airway epithelial cell types

	16HBE14o-	BEAS-2B	NCI-H292	A549	PBECs
Resistance (400 Hz) at 72 h	12000–20000	1400–1600	1000–1200	1200–1500	2000–5000
Time to confluence^# h	30–50	2.5–20	30–40	2.5–15	2–10
ZO-1 at 72 h
Expression	High	Low	Moderate	Low	Moderate
Localisation at junctions	Yes	Fragmented	No	No	Yes
F-actin organisation	Cortical	Stress fibres	Cortical	Stress fibres	Stress fibres

PBEC: primary bronchial epithelial cell; ZO: zona occludens (tight junction protein); F-actin: filamentous actin. ^#: time taken to cover electrode following seeding at 7.5×10⁴ cells·well⁻¹.