"After putting aside all possible elements of contamination, DNA was found that did not coincide with any of the well-known types in the global database," said Sergei Bulat, of the genetics laboratory at the St Petersburg Institute of Nuclear Physics."
However, other researchers said the data needed to be carefully verified by other experts before the claims could be confirmed.
However, other researchers said the data needed to be carefully verified by other experts before the claims could be confirmed.
