dirty girl mud run atlanta coupon code harriet carter coupons 2013 stouffer's facebook coupons avoseedo coupon code
First Cow Embryonic Stem Cells Derived

First Cow Embryonic Stem Cells Derived

Source: Science Magazine (East Lansing, Mich.) — After decades of effort, scientists have finally managed to derive embryonic stem (ES) cells from cows and keep them in their primitive state in a dish. Access to these versatile cells, which can become all kinds...