SARS-CoV-2 accessory proteins ORF7a and ORF3a use distinct mechanisms to down-regulate MHC-I surface expression. - Arshad N; Laurent-Rolle M; Ahmed WS; Hsu JC; Mitchell SM; Pawlak J; Sengupta D; Biswas KH; Cresswell P (Proceedings of the National Academy of Sciences of the United States of America, 2023)