So one of the most important things that we take from each bird that we prepare is a tissue sample. Our tissue samples are permanently housed here in our negative 60 freezer where they stay until a researcher contextly requesting tissue blocks. And now more and more with the growing field of doing DNA research and the affordability of the equipment required to do DNA research, tissue requests are becoming more and more common. So it's even more important that we take a good fresh tissue sample with each bird that we prepare here at the museum.