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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