Table 1.

Comparison of the viability of MucilAir™ cells at different time points.

		Day 1	Day 28
C neg		88.0 ± 0.7	82.7 ± 3.1
W-NPs	10 µg/cm2	77.3 ± 6.7	78.8 ± 1.5
	20 µg/cm2	79.8 ± 0.5	77.4 ± 2.8
	50 µg/cm2	85.9 ± 0.4	82.0 ± 0.6
WC-Co	10 µg/cm2	80.5 ± 0.9	81.1 ± 1.1
WO42−	10 µg/cm2	87.5 ± 0.9	80.2 ± 0.4

MucilAir™ cells viability was quantified by Trypan blue assay. Cells were trypsinized and collected at the end of the 24 h exposure (day 1) to W-NPs, WC-Co and WO₄²⁻, and at day 28 post-exposure. No statistically significant differences from the C neg were observed by a one-way ANOVA followed by Dunnett’s multiple comparisons test.