TOKYO (AFP) - Scientists from Japan and Russia believe it may be possible to clone a mammoth after finding well-preserved bone marrow in a thigh bone recovered from permafrost soil in Siberia, a report said Saturday. Teams from the Sakha Republics mammoth museum and Japans Kinki University will launch fully-fledged joint research next year aiming to recreate the giant mammal, Japans Kyodo News reported from Yakutsk, Russia. By replacing the nuclei of egg cells from an elephant with those taken from the mammoths marrow cells, embryos with mammoth DNA can be produced, Kyodo said, citing the researchers. The scientists will then plant the embryos into elephant wombs for delivery, as the two species are close relatives, the report said. Securing nuclei with an undamaged gene is essential for the nucleus transplantation technique, it said.