Protocol to request
            
                Quantification of pMad and extracellular staining
                
                
            
        
        
            
                Research article
            
            
                Dally is not essential for Dpp spreading or internalization but for Dpp stability by antagonizing Tkv-mediated Dpp internalization
                
            
            
            
                Niklas Simon et al.
            
            
                DOI: 10.7554/eLife.86663