Which phenotypic assay could be used to determine whether a new Streptococcus spp. is of the pyogenes or viridans group?
A. catalase assay with H2O2
B. hemolytic type after growth on a blood agar plate
C. occurrence of cells being in clusters or as individual cells under a microscope
D. product(s) formed during lactose fermentation
Answer:B
Which phenotypic assay could be used to determine whether a new Streptococcus spp. is of the pyogenes or viridans group?
A. catalase assay with H2O2 B. hemolytic type after growth on a blood agar plate C. occurrence of cells being in clusters or as individual cells under a microscope D. product(s) formed during lactose fermentation