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           Synchrotron-radiation phase-contrast microtomography (Italy, Elettra Trieste)
  tomography area
 
 
 
 
  homogeneous glass (healthy)
 
 
 
  glass with porous structure (silica gel layer)
 
 
  Viacryl® coating   
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           The Viacryl® takes the shape of the glass surface, whether it is altered or not. The thickness of the film varies. When it is well preserved, the adhesion is conserved.   
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