New gel seals wounds fast

Synthetic material revs up blood clotting at low cost

BOSTON — A new gel may provide a cheap means of stanching blood flow on the battlefield or in any other situation where there isn’t time for stitches. Estimates suggest that the gel would cost less than $10 per application, a fraction of the cost of other gels in use today, researchers reported August 23 at the American Chemical Society’s fall meeting.