"The cell kicks out foreign DNA, " said Harvard's Dr. Church.

WSJ: Harvard Researchers Turn Book Into DNA Code

This is one of the few industries for which operating at the nanoscale is not a foreign concept as a DNA molecule is roughly 2 nm wide.

FORBES: On the Ground Floor of Nanotechnology

Jamaica's deputy police commissioner Mark Shields has said the foreign investigators will help with DNA analysis and also examine theories that Mr Woolmer may have been poisoned before being strangled.

BBC: Cricket coach's body is released