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article_metadata: 10.1186/s40425-016-0186-1
article_metadata: J Immunother Cancer
article_metadata: 2016 Nov 15;4:79.
article_metadata: case report immunotherapy merkel cell carcinoma nivolumab pd-l1 polyomavirus
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/27879975/
article_metadata: PMC5109712
article_metadata: 27879975
article_metadata: Metastatic Merkel cell carcinoma response to nivolumab
article_metadata: 2016