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Table 1 The scoring of microscopic lesions of DTMUV-infected ducks at 5 dpi

From: Pathogenicity comparison of duck Tembusu virus in different aged Cherry Valley breeding ducks

Groups

15-week old ducks

55-week old ducks

Score

0

1

2

3

4

0

1

2

3

4

Organs

 Heart*

 

2/3 a

1/3

    

1/3

2/3

 

 Liver

 

3/3

    

1/3

2/3

  

 Spleen*

 

1/3

2/3

      

3/3

 Kidney

  

3/3

     

2/3

1/3

 Brain*

 

2/3

1/3

     

3/3

 

 Ovary*

 

1/3

2/3

     

1/3

2/3

  1. Annotation: a Number with lesions of the three chickens examined. The severity of microscopic lesions on the organs of the infected ducks were scored from 0 to 4 as follows: 0, normal; 1, the range of the lesions (cell degeneration, necrosis, hemorrhage, inflammatory cell infiltration, etc.) was less than 10%; 2, the range of the lesions was between 10 and 30%; 3, the range was between 30 and 50%; 4, the range was more than 50%. * p < 0.05