 and that has to be done for movement to certain states, but you also can do it privately. There are people who've done it just as part of a rule-out. You know, I've had a couple kind of investigations I've done where I've tried to look for the cause of a large-scale infertility in a herd, and it's certainly something you want to rule out. It's a lot easier to test the bulls than the cows. Cows can be tested, but it's a lot trickier to retrieve the sample appropriately, and so generally it's recommended to start with your bulls.