TYB.
COVID is the ‘Lupus’ of viral infections.
It might kill you, or you may not know you have it. But get tested. That way you can be tracked on a Government list.
Try drawing a picture next time because you suck at writing.
Kek.
HIV part is viral surface protein that binds to cell surface. GP120 to the CD4 ligand. T & B cells express CD4. Other cell types may also express depending on circumstances.
That is all.