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Seventy years ago, the desert sands of Arabia revealed vast oil reserves. That wealth is now being put to work to fund potential new sources of revenue
A Nature Reports Stem Cell survey of researchers shows that though most grantees are using stem cell lines eligible for funding under federal law, they are using more lines that are not
Unfertilized eggs have long been the limiting resource for attempts to make genetically tailored human embryonic stem cells. If a new technique for cloning mice from fertilized eggs works in humans, they might not be necessary.