has input has output coronavirus assembly inside cell host assembly of SARS-CoV-2 virion Anthony Huffman, Oliver He https://en.wikipedia.org/wiki/Coronavirus https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4369385/ SARS-CoV-2 Severe acute respiratory syndrome coronavirus 2 severe acute respiratory syndrome coronavirus 2 E gene of severe acute respiratory syndrome coronavirus 2 M gene of severe acute respiratory syndrome coronavirus 2 N gene of severe acute respiratory syndrome coronavirus 2 non-structural protein 4 (SARS-CoV-2) spike glycoprotein (SARS-CoV-2)