The neutralizing potential of these antibodies was assessed in a pseudovirus assay, using infection of HEK293-ACE2 cells with a SARS-CoV-2 Spike-expressing lentivirus (Fig. 1c), as well as against virulent SARS-CoV-2 (ancestral) infection of VeroE6 cells (Fig. 1d). The gene discussed is ACE2; the disease is infection.