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)