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ARS Home » Office of Communications » Images » Photos » Jul15 » LettuceMicrographs


 

 

Micrographs of lettuce leaf tissue showing colonization by green fluorescent E. coli O157:H7.
Left (D3448-1): Healthy tissue has sparse colonization. Right (D3449-1): Tissue infected with downy mildew has high colonization.

 

Photo by Maria Brandl.


 




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