Philobiblon

p. 129 China also gained domesticated sheep, horses and wheeled vehicles via this trail across the steppe. … A team investigated sheep DNA from four Bronze Age archaeological sites in nothern China. All but one of their camples carried mtDNA A, the most common today in all Chinese sheep and most Mongolian sheep. This haplogroup is found in the Near East and seems to have undergone an expansion around the time of domestication there. It is common in the North Caucasuses and middle Volga region. So it would appear that long-wool sheep arrived in the Far East in the Bronze Age via the nomads of the Eurasian steppe. Wool was to come a staple of nomadic life.”

p. 197 The estimate of the total number of Roman slaves over the 1,000 years of the rise and fall of the empire is over 100 million people. The majority were born into slavery.This limits the use of isotope analysis to identify the origins of Roman slaves, for it can only tell us whether an individual had travelled to the place where they were buried. An isotope study of the cemetery at the imperial estate of Vagnari in Iralty did tease out a few foreigners. Their mtDNA haploagroups were not particularly informative … the sample did contain at least one far-travelled individual from East Asia.”