58 Literally a patent on graphene oxide in in the "2019-nCov" vaccines from Shanghai Nanotechnology posted 3 years ago by 54109597683190674324 3 years ago by 54109597683190674324 +58 / -0 https://patents.google.com/patent/CN112220919A/en 9 comments share 9 comments share save hide report block hide replies
To be or not to be..