3 5 | | | | | | | | | | | | | | | 2 18 | | | | | | | | | | ACE2 | | ACE2 | | | | | | | | | 3D | | ACE2 | | | | | | | | | | | | | | | | | | | | | | | | DNA | mRNA | | 20 | | | | |