Step 8 e Finishing. Post-tannage, the samples were allowed
to partially dry, and then were finished by massaging with either
lanoline or TLS leather dressing (a commercially available
mixture of lanoline and oil derived from pig’s feet).
Tissue samples were taken at each step of the process
(numbered 1e22, see Fig. 1), and analysed for mtDNA and
nuDNA survival (Fig. 1).