Table 3.

MUC5AC Protein Levels in Lysates and Apical Surface (Secreted) of Air-Liquid Interface Cultured Human Small Airway Epithelial Cells Exposed to Air, Nicotine-Free (NF) e-Vapor

	MUC5AC/Total Protein (Cell Lysates)		Secreted MUC5AC (Arbitrary Units)
Subject no.	Air	NF e-Vapor	Air	NF e-Vapor
1	0.31	0.46	29,801	26,268
7	0.24	0.46	28,840	21,259
9	0.13	0.60	21,757	20,179
10	0.32	0.46	29,150	22,290
12	0.32	0.45	25,100	21,464
20	0.02	0.62	22,954	20,128