A phenotypic technique of typing microbial strains that consists of serologic typing of bacterial or viral antigens, such as bacterial cell wall antigens of the organism of interest, is:
a. biotyping.
b. antibiograms.
c. serotyping.
d. bacteriophage typing.
C
Classic phenotypic techniques include serotyping (serologic typing of bacterial or viral antigens, such as bacterial cell wall [O] antigens), biotyping (analyzing unique biologic or biochemical characteristics), and antibiograms (analyzing antimicrobial susceptibility patterns). Bacteriophage 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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