Task: Answer Verification
Input (English): Question: Are human polyomaviruses 6 and 7 detectable in Merkel cell polyomavirus-negative Merkel cell carcinoma?
Answer: While MCPyV, HPyV6, and HPyV7 are part of normal skin flora and show a high degree of sequence similarity, there is no evidence of an association between HPyV6 and HPyV7 and MCC in this case series. This result argues against a role for HPyV6 and HPyV7 in the pathogenesis of MCPyV-negative MCC.
Output (English): no