Is there any evidence that the increased levels of ACE2 in either condition enhance the infection of SARS2? Does more ACE2 = more infection in the lung? No evidence this is the case in vivo. In fact in cells, too much ACE2 inhibits release of SARS2! Common in CoV expts in past. https://twitter.com/delthiaricks/status/1249085575547752448

Here is an old MHV paper. Our SARS2 results are coming soon.

https://link.springer.com/chapter/10.1007/978-1-4615-5331-1_71