Minnesota Public Radio slideshow:
Tracking livestock to prevent disease
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Northfield farmer Ray Larson wants the animal ID system because he thinks it will make consumers more confident about the safety of the food supply.  (MPR Photo/Lorna Benson)

Northfield farmer Ray Larson wants the animal ID system because he thinks it will make consumers more confident about the safety of the food supply.

(MPR Photo/Lorna Benson)
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