The array was probed with sera samples collected from K18-hACE2 transgenic mice surviving from an infection with either the BavPat1/2020SARS-CoV-2 isolate (Ref-SKU: 026V-03883; WT) and the two variants of concern (VOCs): B.1.1.7 Alpha and B.1.351 Beta. This evidence concerns the gene KRT18 and infection.