News
- Health & Medicine
Clot promoter cuts surgical bleeding
A clot-promoting protein known as recombinant activated factor VII might offer a new way to staunch demand for blood transfusions.
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Psychiatric drugs surge among kids
The proportion of children and teenagers in the United States taking drugs prescribed for psychiatric disorders more than doubled from 1987 to 1996.
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From Bone to Brain: Transplanted male bone marrow makes nerve cells in women and girls
Transplanted bone marrow can form new nerve cells in the brains of people.
- Chemistry
Unnatural Biochemistry: Bacteria make and use an alien amino acid
Researchers have constructed an organism that synthesizes and incorporates an extra amino acid into its proteins.
