A phenotypic technique of typing microbial strains that consists of analyzing antimicrobial susceptibility patterns of the organism of interest is:
a. biotyping.
b. antibiograms.
c. serotyping.
d. bacteriophage typing.
B
Classic phenotypic techniques include antibiograms (analyzing antimicrobial susceptibility pat-terns), biotyping (analyzing unique biologic or biochemical characteristics), and serotyping (se-rologic typing of bacterial or viral antigens, such as bacterial cell wall [O] antigens). Bacterio-phage typing, which examines the ability of bacteriophages (viruses capable of infecting and lysing bacterial cells) to attack certain strains, has been useful for typing P. aeruginosa and S. aureus, respectively. These techniques, however, are not widely available.
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