After the material has been irradiated in the UV Room, the appraisal, photographic documentation, sampling and storage of the material is carried out.
The actual sampling point – the sawing of the piece of bone out of a long bone or the extraction of a tooth from a jaw – is done in the Cutting Room, a separate room within the Sample Preparation Room. The removal of the surface of the sample is particularly important in the process to avoid contamination, as the sample material will have been in contact with a number of people, such as archaeologists, anthropologists or museum staff before being worked on in the aDNA laboratory. There is also a sand blaster available for this step, which can be adapted depending on surface and condition of the material.
Following the removal of the surface layer, the material is roughly crushed followed by further radiation of 30 minutes per side in the UV Room before the sample is further processed in the extraction laboratory. |
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Johannes Gutenberg University
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