Fig. 1From: Genetic characterization of a Marek’s disease virus strain isolated in JapanThe phylogenetic tree based on sequences from UL to US. The tree of UL–US regions from Kgs-c1 and MDV strains isolated in other countries was generated based on the minimum evolution algorithm with a bootstrap analysis of 1000 replicates. The MDV genomes were classified into two clusters, Eurasia and North America. The scale indicates divergence timeBack to article page