Did you know that you have accessible stem cells up your nose? Or that human fetuses shed stem cells into the fluid around them? Both of these seemingly random facts could spawn novel, personalised stem-cell treatments that, if not simple per se, are simpler than what has gone before. What marks these treatments out is that they are eminently practical and ethically unquestionable. This is in stark contrast to much previous work, which has focused on human embryonic stem cells, or hESCs. From the outset, the use of hESCs has been fraught with controversy. Only last week, after years of trying, and the notorious fraud involving Korean researcher Woo Suk Hwang, hESCs were finally created through a variant of the cloning technique that gave us Dolly the sheep.
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