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Table 3 The count of quasispecies viruses isolated from lung and trachea tissues with and without vaccine selective pressure

From: Effect of the selection pressure of vaccine antibodies on evolution of H9N2 avian influenza virus in chickens

Generation

Strain count

Generation

Strain count

Generation

Strain count

1VB

10

4VB

10

15VB

10

1VL

12

4VL

11

15VL

10

1NB

11

4NB

12

15NB

13

1NL

10

4NL

10

15NL

11

2VB

10

5VB

17

20VB

20

2VL

10

5VL

11

20VL

24

2NB

10

5NB

16

20NB

19

2NL

10

5NL

10

20NL

15

3VB

10

10VB

10

  

3VL

10

10VL

11

  

3NB

10

10NB

11

  

3NL

10

10NL

10

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