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Molecular biology, and the genetic material called DNA that it made fashionable, is only thirty years old Most people will be tempted to believe that time has slipped. But that is the sense that true discoveries create.
As a service to readers interested in arms control, and in the hope of not boring others with oever-long articles on the subject, Nature will in the months ahead publish occasional summaries of the previous week's developments. The first follows.
The discovery in the past two years that a specific virus may be responsible for many T-cell malignancies raises awkward questions for blood banks — and the rest of us.
