Objectives Introduction Procedure Results Figure Discussion Acknowledgements and References

		Acknowledgements J. Cebra-Thomas was very helpful in providing guidance and knowledge in the lab. W. Gresh provided useful comments earlier drafts. S. Ferrari and R. Yanega wrote the procedure on which this experiment was based. References Ferrari,S. and Yanega, R. 2000. Effect of Cyclopamine on Medaka (Oryzias latipes) embryos. DB_Lab website. http://www.swarthmore.edu/NatSci/sgilber1/DB_lab/Student/Medaka_cyclo.html Last modified 2 August 2001. Viewed 4 April, 2004. Gilbert, S. (2003) Developmental Biology. 7th ed. Sunderland, MA: Sinauer Associates, Inc. Incardona, J.P., W. Gaffield, R. P. Kapur, H. Roelink. (1998). The teratogenic Veratrum alkaloid cyclopamine inhibits Sonic hedgehog signal transduction. Development 125: 3553-3562. Mindel, J. 2000. The effects of ethanol on zebrafish development. DB_Lab website. http://www.swarthmore.edu/NatSci/sgilber1/DB_lab/Fish/Ethanol_1.html Last modified 2 August 2001. Viewed 4 April, 2004. Neumann, C. J. 2001. Pattern formation in the zebrafish retina. Cell & Developmental Biology 12: 485-490. Perron, M., S. Boy, M.A. Amato, A. Viczian, K. Koebernick, T. Pieler, W. Harris, (2002). A novel function for Hedgehog signaling in retinal pigment epithelium differentiation. Development 130: 1565-1577. Sprague, J., E. Doerry, S. Douglas, and M. Westerfield, (2001). "The Zebrafish Information Network (ZFIN): a resource for genetic, genomic and developmental research. Nucleic Acids Res." 29, 87-90. Wolff, C., S. Roy, P. W. Ingam. (2003) Multiple muscle cell identities induced by distinct levels and timing of Hedgehog activity in the zebrafish embryo. Current Biology 13: 1169-11