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                        Figure Caption
                    
                    
                
                
            
        
        
    
        
            
            
Fig. 4 GFP-labeled thymic T cells obtained from adult lck-GFP transgenic fish home to the thymus of transplanted embryos. (A) GFP fluorescent microscopic images of a 4-day-old transplanted embryo (anterior to the left and dorsal to the top) are shown. (B and C) Enlarged views of the head and tail region, respectively. Arrowheads denote GFP-labeled cells in the thymus (T) and in the tail region. Asterisks denote autofluorescence of the yolk sac.
                
                    
                        Acknowledgments
                    
                    
                
                
            
        
        
    
        
            
            
                
                    
                        
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      Full text @ Proc. Natl. Acad. Sci. USA
                    
                    
                
            
        
        
    
    
     
        