so, the hypothesis that we're testing with helen hsu at the national institutes of health, is that thesecarry genetic variations -- in the past, people would say mutations -- genetic variations that are silent clinically until they're infected by the coronavirus. and in a few days or weeks, they develop severe luminitis and have to be into an intensive care unit. >> so it's basically something in their dna that enables the virus to be much more lethal in how it acts? >> right, exactly. but you know, this is not an idea that came out of the blue. helen hsu at the nih had discovered mutations, variations, responsible for luminitis caused by the rhinovirus. and we had discovered other variations responsible for influenza numonitis, so we had already shown for two other types of viral that were aware, what we know as inbot errors of immunity that could underlay these catastrophic illnesses. so we teamed up and tried to decide to test whether what was true with rhinovirus could apply to coronavirus. >> are these genetic variations consistent across people? in other words, is it something you