Result: Notably, single
D614G and combined variants with
D614G (
D614G+
L5F,
D614G+
V341I,
D614G+
K458R,
D614G+
I472V,
D614G+
D936Y,
D614G+
S939F, and
D614G+
S943T) demonstrated increased infectivity compared to the reference strain in all the four cell lines (Figures 3A-3D), whereas no difference was found between single
D614G and
D614G combined variants, suggesting that the en