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Contact: Phil Sneiderman
prs@jhu.edu
443-287-9960
Johns Hopkins University
Caption: Johns Hopkins graduate students Mike Martin and Marcelo Chamecki used high-tech and low-tech equipment to study the spread of ragweed pollen in this 18- acre field near Washington, D.C.
Credit: Will Kirk/JHU
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Related news release: Ragweed research is nothing to sneeze at
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