As is the case with all viruses, SARS-CoV-2, the causative agent of COVID, gains entry to cells by latching onto particular molecules, usually proteins, sitting in their surface membranes.
I'm just trying to find what word in this amendment they're latching onto–that it's particularly cruel, that it's unusual, that it's excessive… You know what I mean? I don't know.
Now, once hormones are sent into the bloodstream, they travel around until they reach the right target, usually by latching onto a specific receptor on a certain type of cell, and they deliver their chemical message.