ANSWERS: 1
  • "To establish that a specific pathogen is the cause of the disease, the researcher must (1) find the same pathogen in each individual investigated (2) isolate the pathogen from the diseased subject and grow the microbe in a pure culture (3) induce the disease in experimental animals by transferring the pathogen form the culture, and (4) isolate the the same pathogen from the experimenal animals after the disease develops." 'Nuff Said (Source: Campbell Biology 6th Edition p.541)

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