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The article reports on the claims of PrimeGen, a biotechnological company based in Irvine, California, that it has used carbon nanotubes to reprogram adult human cells to an embryonic-like state, a breakthrough that removes the elevated risk of cancer that blights other techniques. PrimeGene researchers used the nanotube delivery system to introduce genes into human testicular and retinal cells, and PrimeGene has reported that they were quickly taken up by an impressive 80% of the cells. It is reported that PrimeGene announced an alliance with Unidym, based in Menlo Park, California, which makes the nanotubes.