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Geographical distribution of ALV-J isolated in China. The deeper the color suggests the province have more ALV-J strain isolations. ▪ ALV-J isolated from our lab; ▲ ALV-J isolated from Chinese Yellow-chicken; ▪ ALV-J isolated from White-feather broilers; ▪ ALV-J isolated from layer chickens; ▪ ALV-J isolated from Gallus gallus; ▪ ALV-J isolated from wild birds. Abbreviation: ALV-J, avian leukosis virus subgroup J.
