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ARTÍCULO
TITULO

Comparison of two DNA extractions and nested PCR, real-time PCR, a new commercial PCR assay, and bacterial culture for detection of Mycobacterium avium subsp. paratuberculosis in bovine feces

J Christopher-Hennings    
MA Dammen    
Weeks    
SR    
WB Epperson    
SN Singh    
GL Steinlicht    
Y Fang    
JL Skaare    
JL Larsen    
JB Payeur    
and EA Nelson    

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