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[ScienceD] In saliva, clues to a 'ghost' species of ancient human - Science Daily - 2017-07-24
In saliva, clues to a 'ghost' species of ancient human
In saliva, scientists have found hints that a 'ghost' species of archaic humans may have contributed genetic material to ancestors of people living in sub-Saharan Africa today. The research adds to a growing body of evidence suggesting that sexual rendezvous between different archaic human species may not have been unusual.
http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/WAZWxE-nG8c/170721113415.htm