I think the 21-month rule is a perfect example of that. Japan is the only country that has set a 21-month age limit. The reason they did that is that they believed they had two cases of BSE from cattle that were 21 months old. It was difficult, in that those cases were not confirmed by the World Reference Laboratory for Foot-and-Mouth Disease. It would be very unusual that an animal that young was confirmed with a case of BSE, but there was no physical way to confirm it.
I would say it's that over-sense of caution they have. And why do they do that? Is it for caution? Is it for trade-restrictive reasons? I guess people can make their own judgment call on that. But it does take time. Over time, we're hopeful that we're going to get beyond that particular restriction.