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" ... The genome of SARS-CoV-2 (SARS-2) is both large and complex, encoding at least 30 distinct proteins. The proteins can be divided into three function groups: Those that specify the replication-transcription machinery necessary to assure copying of the genome and production of messenger RNAs from which all the viral proteins are made, the structural proteins comprising the nuclear core, the outer membrane, and the spike proteins of the infectious virus particle, and the accessory genes, those that specify functions vital for successful propagation in adult immunocompetent animals but dispensable for growth in cell culture (Figure 1A). ... "