Extended Data Fig. 3: In vivo attenuation of ΔPRRA-mutant SARS-CoV-2.
From: Loss of furin cleavage site attenuates SARS-CoV-2 pathogenesis

a, Weight loss following primary challenge with wild-type or ΔPRRA SARS-CoV-2 (n = 4 hamsters per group). b, c, Weight loss (b) and disease score (c) after rechallenge with wild-type SARS-CoV-2 of hamsters previously infected with wild-type and ΔPRRA SARS-CoV-2 (n = 4 hamsters per group). Data are mean ± s.e.m.