In 2010, a genetic study was conducted on the mummified remains of baboons that were brought back from Punt by the ancient Egyptians. Led by a research team from the Egyptian Museum and the University of California, the scientists used oxygen isotope analysis to examine hairs from two baboon mummies that had been preserved in the British Museum. One of the baboons had distorted isotopic data, so the other's oxygen isotope values were compared to those of modern-day baboon specimens. The researchers at first found that the mummies most closely matched modern specimens seen in Eritrea and Ethiopia as opposed to those in neighbouring Somalia, with the Ethiopian specimens "basically due west from Eritrea". The team did not have the opportunity to compare the mummies with baboons in Yemen. The scientists believed that such an analysis would yield similar results since, according to them, regional isotopic maps suggest that baboons in Yemen would closely resemble those in Somalia. Professor Dominy, one of the lead researchers, concluded from this that "we think Punt is a sort of circumscribed region that includes eastern Ethiopia and all of Eritrea." In 2015, the scientists conducted a followup study to confirm their initial findings, and concluded that "our results reveal a high likelihood match with eastern Somalia and the Eritrea-Ethiopia corridor, suggesting that this region was the source of Papio hamadryas exported to Ancient Egypt."