Downregulation of MHC-I expression is prevalent but reversible in Merkel cell carcinoma. - Paulson KG; Tegeder A; Willmes C; Iyer JG; Afanasiev OK; Schrama D; Koba S; Thibodeau R; Nagase K; Simonson WT; Seo A; Koelle DM; et al. (Cancer immunology research, 2014)