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Table 2 Experimental design

From: Slow lung clearance and limited translocation of four sizes of inhaled iridium nanoparticles

Nominal particle diameter (nm)

Exposure duration (mins)

Total animals

Post-exposure sacrifice time (group size)

Main study – Clearance and translocation

10*

120

36

0 h (6), 24 h (4), 3d (4), 7d (4), 14d (4), 30d (5), 63d (4), 90d (5)

15

75

35

0 h (10), 24 h (5), 2d (4), 5d (4), 9d (4), 28d (4), 109d (4)

35

180

36

0 h (6), 24 h (6), 3d (4), 7d (4), 14d (4), 28d (4), 64d (4), 589d (4)

75

60

9

0 h (5), 30d (4)

Supplementary study A – Clearance

15

10

5

 

15

20

5

 

15

40

5

 

15

60

5

 

Supplementary study B – Additional samples for imaging

10

120

6

24 h (2), 5d (2), 30d (2)

75

60

6

24 h (2), 5d (2), 30d (2)

  1. *For the 10 nm study additional animals (system controls) were exposed in the same system to gases without nanoparticles for 120 mins and sacrificed at 3 and 7 days post-exposure