Biophysical characterization of the structure of a SARS-CoV-2 self-amplifying RNA (saRNA) vaccine - Myatt,DP; Wharram,L; Graham,C; Liddell,J; Branton,H; Pizzey,C; Cowieson,N; Rambo,R; Shattock,RJ (BIOLOGY METHODS & PROTOCOLS, 2023)