Gene Editing Mutant Spike Proteins & Antigens for SARS-CoV-2 Variant Research Posted on February 17, 2021 by Editorial Staff AMSBIO has introduced a collection of mutated SARS-CoV-2 spike proteins and recombinant antigens for the new virus variants – B.1.1.7 and B.1.351. Share on Facebook Tweet Follow us Share Share Share Share Share Editorial Staff Analytical Chemistry of Beer and Brewing STAT+: Cancer cases place Bluebird Bio’s gene therapy business at a crossroads, and might drag the entire field along