| molecular characterization and phylogenetic analysis of a virulent marek's disease virus field strain in broiler chickens in japan. | marek's disease is a lymphoproliferative disease causing a serious threat in poultry production. field strains of marek's disease virus (mdvs) are continuously re-emerging, causing great economical losses to the poultry industry worldwide in spite of the intensive vaccination and restrictive management policy used. histopathological and molecular characterizations of mdvs are essential for monitoring the changes of viruses and evaluating the effectiveness of existing vaccines. during 2016, 190 v ... | 2017 | 28762757 |