Both sides are expressing concern over North Korean statements on Friday that Pyongyang is continuing to extract plutonium from spent nuclear fuel for material useable in weapons.

VOA: standard.2009.09.06

Also, he said, it would take hours or days for anyone to dismantle the CFX and extract the nuclear fuel.

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They managed to extract the type of DNA found in the nuclei of cells (nuclear DNA) and genetic material from the cell's "powerhouses" - known as mitochondria.

BBC: Fossil human traces line to modern Asians