Marek's disease virus (MDV), a herpesvirus, and avian leukosis virus, subgroup J (ALV-J), a retrovirus, are oncogenic viruses of poultry. The present report describes a case-report study aimed at examining the efficacy of amplifying MDV and/or ALV-J from feather-tip DNA as compared with DNA purified from liver and spleen. We show that the polymerase chain reaction for MDV and ALV-J env using DNA from feather tips was more effective for diagnosis of naturally infected commercial chickens than using the liver and spleen.
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Davidson et al. (2002) studied this question.
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