One of the great things about tissue engineering, for example, and stem cells is precisely the ability to develop human cells that resemble a human so that you don't need to do these other stages of testing, necessarily. I think this is actually a great avenue and possibility for the future.
As we move more in that direction, I think that as science and technology evolve, our regulatory processes and legislation will also need to evolve, and anything we can do to speed the development and use of new treatments for diseases will certainly be welcomed by me.