A 37-year-old man infected with HIV for the past 10 years is admitted to the hospital with abdominal pain of 3 days du- ration. Physical examination shows abdominal distention and absent bowel sounds. An abdominal CT scan shows a mass lesion involving the ileum. He undergoes surgery to remove an area of bowel obstruction in the ileum. Gross examination of the specimen shows a firm, white mass, 10 cm long and 3 cm at its greatest depth. The mass has infiltrated through the wall of the ileum Histologic studies show a mitotically active population of CD19+ lymphoid cells with prominent nuclei and nucleoli. Molecular analysis is most likely to show which of the following viral genomes in the lymphoid cells?