In saliva, clues to a 'ghost' species of ancient human

(University at Buffalo) 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.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news