Dr Kamat and his team covered the surface of an experimental cell made of cadmium sulphide, zinc oxide and titanium dioxide with nanotubes, so that the tubes stuck up from the surface like hairs.

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Leery of previous moral and ethical debates about whether it is right to manipulate life forms which arose with the advent of cloning, stem-cell technology and genetic engineering some researchers chose neutral terms to describe the experimental cell.

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Stem cell therapy today is experimental but promising.

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Indeed, the UNN project is further subdivided into three major experimental sub units namely: Mushroom, Plant and animal Cell tissue culture.

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However, on a July 31 conference call, Bristol's Cornelius said the deal had been inspired not just by the improving prospects for Erbitux, which recently had good study results in non-small-cell lung cancer, but also by the promising experimental cancer drugs ImClone has advanced over the past two years.

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These cell lines have the potential of introducing other viruses into the experimental environment.

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