Yes, maybe my colleague, Fanny, can expand a little as well, given her background.
The first test that was approved was a molecular test. These have been the tests that have been used throughout the COVID pandemic. The serology test is more focused on determining whether folks have had the disease in the past and not known it. For example, as a younger person, perhaps I had it earlier. I went to the Dominican Republic prior to coming back home, and then the pandemic occurred, so perhaps I had it. That's the type of test that the serology test would be used for, on people like me, and it would be a great use for folks who work in the health care system or folks who are teachers or things like that to check to see if they've had COVID in the past.