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  1. 19221

    Your article reports that chemically synthesized erythropoiesis protein (SEP) was more effective than the genetically engineered molecule. Is there speculation on why that is? Ann DershowitzWest Orange, N.J. Chemically constructed SEP molecules are much more consistent in size, shape, and other properties than genetically engineered erythropoietin. The polymer appendages put onto the molecule protect SEP […]

    By Science News
  2. Chemistry

    Synthetic molecule may treat anemia

    Researchers have created a new form of the protein erythropoietin (EPO) using synthetic chemistry techniques.

    By Jessica Gorman
  3. Earth

    9/11 ash, and more, found in river muck

    Sediment cores pulled from the Hudson River near the World Trade Center site contain a thin layer of metal-rich ash and pulverized debris.