A phenotypic technique of typing microbial strains that consists of analyzing unique biologic or biochemical characteristics of the organism of interest is:

a. biotyping.
b. antibiograms.
c. serotyping.
d. bacteriophage typing.


A
Classic phenotypic techniques include biotyping (analyzing unique biologic or biochemical cha-racteristics), antibiograms (analyzing antimicrobial susceptibility patterns), 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, have been useful for typing Pseudomonas aerugi-nosa and Staphylococcus aureus, respectively. These techniques, however, are not widely avail-able.

Biology & Microbiology

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