https://www.cell.com/cell/pdf/0092-8674 (94)90258-5.pdf?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2F0092867494902585%3Fshowall%3Dtrue#%20 https://www.invivogen.com/sars2-nucleocapsid
http://www.nicovideo.jp/watch/sm43259645