Table 2

Transmission electron microscopy assessment of epithelial integrity

Age (years)nCells with loss of cilia (%)Cells extruding from surface (%)Cells with cytoplasmic blebbing (%)Cells with mitochondrial damage (%)Epithelial integrity
Results are for individual age groups and expressed as the mean (5th and 95th percentiles).
0–61624.1 (9.1, 38.4)23.2 (12.9, 37.0)14.2 (6.4, 23.5)13.4 (1.1, 33.3)1.3 (0.8, 2.0)
7–121324.7 (6.0, 58.2)21.5 (10.5, 35.8)11.8 (5.5, 24.2)8.9 (0.0, 21.9)1.3 (0.8, 1.9)
13–181020.2 (7.2, 37.4)18.7 (7.9, 31.6)11.5 (2.5, 24.3)8.0 (2.3, 16.1)1.1 (0.8, 1.7)
≥191531.4 (15.7, 72.0)25.5 (18.6, 36.1)13.4 (6.0, 24.2)10.1(1.3, 21.5)1.1 (0.5, 2.0)