SARS-CoV-2 biological clones are genetically heterogeneous and include clade-discordant residues - de Avila, AI; Soria, ME; Martínez-González, B; Somovilla, P; Mínguez, P; Salar-Vidal, L; Esteban-Muñoz, M; Martín-García, M; Zuñiga, S; Sola, I; Enjuanes, L; Gadea, I; et al. (Journal Of Virology, 2025)