Stained glass fragments

Table IV. Analyses of Medieval Stained Glass Fragments, Excavated from Scottish Sites...

The PCR-based tissue identity test requires a very small amount of DNA and can be successfully performed using FFPE tissue samples or hematoxylin and eosin-stained tissue fragments removed from glass slides. 

It was used for the construction of large windows from smaller fragments of glass at a time before large-sheet glass production was possible. Stained glass windows still remain as a prominent example of this art. 

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