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Generation of ALV-J strains with mutated NGSs. (a) Western blot analysis of wide-type and13 mutant ALV-J strains. β-actin was included as a loading control. (b) Viral titers of wide-type and 13 mutant ALV-J strains after 3 continuous passages in DF-1 cells. (c) Viral titers of wide-type, N17, T19, N193, and S195 ALV-J strains after 3 continuous passages in DF-1 cells.
