Introduction of Two Prolines and Removal of the Polybasic Cleavage Site Lead to Higher Efficacy of a Recombinant Spike-Based SARS-CoV-2 Vaccine in the Mouse Model.

mBio · 2021 · PMC8092267 · PMID 33653892

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showed a trendno p-value reported

Only on days 4 to 6, the WT, PP, and ΔCS groups showed a trend toward less weight loss than the control group.

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