Site

Group^{a}

Mean Score

Standard Deviation

Significance^{b}


Bronchus

A

1.18

0.85
 
B

0.97

0.80
 
C

2.29

0.90

0.001

Bronchiole

A

0.44

0.54
 
B

0.50

0.54
 
C

1.40

0.93

0.001

Alveolus/smooth muscle

A

0.54

0.61
 
B

0.26

0.48
 
C

1.73

1.09

0.001

Arteriole

A

0.80

0.83
 
B

0.80

0.88
 
C

2.18

0.96

0.001

Pulmonary artery

A

0.50

0.54
 
B

0.73

0.81
 
C

2.34

0.84

0.001


^{a}Group A (10): selamectin treatment initiated on Day 28 PI; Group B: (10) oral ivermectin treatment initiated Day 70 PI; Group C: infected untreated

^{b}Group C (9) was significantly different than Groups A and Group B, which were not significantly different from each other