Task: Answer Verification
Input (English): Question: Is parvovirus B19 associated with benign testes as well as testicular germ cell tumours?
Answer: This confirms the presence of parvovirus B19 in a proportion of germ cell tumours; however, in one patient, the virus was widespread in the tissue components and not confined to tumour cells. In addition, the virus was present in control benign testes. These data suggest that B19 might not be of aetiological importance in germ cell tumours of testis.
Output (English): yes