Exercise 4 – Streptococci, Pneumococci, and Enterococci
Differentiate the microscopic morphology of streptococci and pneumococci as seen by Gram stain.
What type of hemolysis is produced by S. pneumoniae?
How is S. pneumoniae distinguished from other streptococci with the same hemolytic properties?
Describe the hemolysis produced by alpha-hemolytic, beta-hemolytic, and nonhemolytic streptococci.
What type of hemolysis is displayed by the groupable streptococci that are most pathogenic for
human beings?

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