The authors would like to thank the following people who helped bring this project to completion: Bertha Macias, Jennifer Hines, Kelly Thrippleton, Doug Lloyd and the rest of the students in Dr. Acey’s lab and in Dr. Mason’s lab. Without these people, the data would still have been produced, but the work would not have been as enjoyable. This project was supported by the NSF Grant # DBI-9978806.