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          Works Cited: 
         
          
         Bellairs, Ruth and Mark Osmod. 1998. The Atlas of Chick
         Development. Academic Press, San Diego, pp. 69-71. 
         
          
         Cebra-Thomas, Judy. “Culture
         of Embryonic Organ Rudiments.” DB Lab. 17 January
         2004. Comp. Judith Cebra-Thomas. Swarthmore Server. 22 April
         2004. http://www.swarthmore.edu/NatSci/sgilber1/DB_lab/Chick/Organ_culture.html 
         
          
         Chuong, Cheng-Ming and Randall B. Widelitz. 1998. “Feather
         Morphogenesis: A Model of the Formation of Epithelial
         Appendages.” Molecular Basis of Epithelial Appendage
         Morphogenesis. R.G. Landes Company. Austin, pp. 57-74. 
         
          
         Gilbert, Scott. 2003. Developmental Biology, 7th ed. Sinauer
         Associates, Inc., MA, pp.147-149;416-418. 
         
          
         Scott, Tony. “Skin: Regeneration After Full-Thickness
         Wounds.” Supervisor Dr. Lars Nielsen 27 October 2000.
         University of Queensland. 23 April 2004. www.cheque.uq.edu.au/ugrad/theses/
         2000/iitheses/T_Scott.pdf 
         
          
         Organogenesis Inc: Living Technology. 2003. Organogenesis
         Inc. 23 April 2004. 
         http://www.organogenesis.com/content/proddescrp.htm 
         
          
         Rouzankina, I. Cory Abate-Shen, and Lee Niswande. “Dlx
         genes integrate positive and negative signals during feather
         bud development.” Developmental Biology. 265:
         219-233.        |