Which of the following would best differentiate Streptococcus agalactiae (Group B) from Streptococcus pyogenes (Group A)?

The Prussian blue staining of peripheral blood identifies:

The common unit of measure for a standard solution is:

The enzyme, which exsists chiefly in skeletal muscle, heart and brain, is grossly elevated in active muscular dystrophy, and rises early in mycardio infarction is:

Aspartate aminotransferase (AST) is characteristically elevated in diseases of the:

On an electronic cell counter, hemoglobin determinations may be falsely elevated owing to the presence of:

A gram-negative diplococcus that grows on modified Thayer-Martin medium can be further confirmed as Neisseria gonorrhoeae if it is:

A sheep blood agar plate inoculated with 0.001 mL of urine grows 70 colonies of Staphylococcus aureus. How many colonies per mL of urine should be reported?

A positive niacin test is most characteristic of Mycobacterium:

Hepatitis C (nonenteric form of non-A, non-B hepatitis) differs from hepatitis A and hepatitis B because it: