Effects of Zinc, a Heavy Metal, and Diazinon, a Common Pesticide, on the Embryonic Development of the
African Clawed Frog Xenopus laevis

Brett C. De Poister Fleetwood, Pennsylvania

Acknowledgements

I would like to thank Dr. Richard Heller, PhD at Albright College for assisting me in my project and giving me complete use of his histology lab. If it were not for Dr. Heller I would not have been able to do this project. I would also like to thank Dr. Daniel S. Kessler at the University of Pennsylvania for suggesting that I use histological analysis on Xenopus laevis embryos and reviewing my slide photos.

I would also like to thank Professor Mike Tyler at the University of Adelaide, Australia for allowing me to study in his laboratory for two months during the summer of 1996. While studying in his laboratory Hyde Walters taught me some basic histological methods.

I would also like to thank the following people for giving suggestions and aiding me in my science fair project: Dr. Brian Rowning at the University of California, Randall T. Moon at the University of Washington, Dr. Todd Evans, James Hanken at the University of Colorado, Dr. Douglas De Simone, Carin Hansen at the University of California, Albert Candia, Ph. D. at Stanford University School of Medicine, Michael W. Klymkowsky at the University of Colorado, Jingdong Tian at SUNY, Wendy Goldstein at Cold Spring Harbor Laboratory, Joseph Besharse, Eric Paul and Christine Rozzi

I would also like to thank Spencer S. Stober, M.S. at Alvernia College for allowing me to use the college's microtome and analytical scales.

I would also like to thanks all the science teachers at my high school expecially to Mr. Charles Fluharty. I would also like to thank Dr. Derrek Hiester for his support and knowledge of the subject at hand. Finally, I would like to thank my parents for being supportive of my project and helping me any way they can.

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