Image
                    
                    
                
                
            
        
        
    
        
            
            
        
        
    
    
    
                
                    
                        Developmental Stage
                    
                    
                
                
            
        
        
    
        
            
            
                
                    20-25 somites  to Prim-5
                
                
            
        
        
    
    
    
                
                    
                        Orientation
                    
                    
                
                
            
        
        
    
        
            
            
                | Preparation | Image Form | View | Direction | 
| whole-mount | still | side view | anterior to left | 
                
                    
                        Figure Data
                    
                    
                
                
            
        
        
    
        
            
            
 
    
    
        
    
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                Anatomy Terms:
                    
                
            
            
        
    
    
        
        
    pronephric duct
    , 
    optic stalk
    , 
    proctodeum
    , 
    thyroid primordium
    , 
    midbrain hindbrain boundary
    
    
    
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