Creation of a peptide database of corneous beta-proteins of marine turtles for the identification of tortoiseshell: archaeological combs as case study.

The capital gain was clearly quite significant between the purchase price in the colonies and the sale price in France because turtle shells, a common raw material in the West Indies, were part of luxury products in France, at least between the seventeenth century and the first half of the eighteenth century. 1.3.

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