Time point/group

Number of giant cell nuclei

Number of giant cells

2 to 5

6 to 10

11 to 15

>15

n

Chi-square

7 days

Untreated

8

2

0

1

9

15*

Treated

27

6

1

2

34

14 days

Untreated

23

19

5

5

52

18*

Treated

76

31

7

6

123

21 days

Untreated

15

11

0

2

29

23*

Treated

28

19

7

8

64