The SARS-CoV-2 Pseudoviral Particles are replication-deficient Maloneymurine leukemia virus (MLV) pseudotyped with the SARS-CoV-2 spike protein of the South Africa variant B.1.351 (a.k.a. 20H/501Y.V2, formerly 20C/501Y.V2) (GISAID sequence accession number: EPI_ISL_736980).