If you were going to identify microorganisms within a specimen containing large numbers of organisms (seawater, normal microbiota, etc.), you would have to
A. amplify gene sequences within the sample to identify each of the different organisms.
B. use a wide variety of microbiological media to identify all of the different species of microorganisms.
C. use different kinds of serological tests.
D. use a wide variety of antibodies to react with the antigens.
Answer: A
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