Minnesota Public Radio slideshow:
Scientists hope lamprey 'perfume' can help reduce their numbers
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A lamprey attaches itself to Jared Fine's arm. Lamprey suck the vital juices out of large fish; each one kills about 40 pounds of fish a year. (Photo courtesy Peter Sorensen)

A lamprey attaches itself to Jared Fine's arm. Lamprey suck the vital juices out of large fish; each one kills about 40 pounds of fish a year.

(Photo courtesy Peter Sorensen)
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