Lettuce object of California health study

Farms in California's Salinas Valley are being evaluated to determine why leafy greens grown in the area are linked with E. coli.

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<p><a href="http://www.physorg.com/news77213933.html">Lettuce object of California health study</a></p> <p>Farms in California's Salinas Valley are being evaluated to determine why leafy greens grown in the area are linked with E. coli.</p>