Fig. 2. Map, chronology, and elevation of samples included in this study and protein results for studied individuals.

(A) Distribution of sites investigated in the present study and preservation of milk and oral proteins for individuals from those sites (table S2 and datasets S2 and S3). (B) Timeline and elevation of studied samples, total number of human individuals from each site, and protein preservation and dairy recovery from their calculus (text S2 and dataset S2).