A young girl goes to her physician’s office with a fever, headache, and a sore throat. The mother states the girl has a fever of 38.8°C (102°F). What test should the physician order?

All of the following enzymes are produced by staphylococci, except

What test presumptively differentiates b-hemolytic Group A streptococci and nonhemolytic Group D enterococci from other streptococcal species?

Staphylococcus aureus food poisoning is most commonly caused by these two enterotoxins.

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A microbiologist is working with two separate cultures of the same organism. The bacteria in one culture are resistant to penicillin, whereas the bacteria in the other culture are susceptible to penicillin. The bacteria from both cultures are mixed together, and all the resulting bacteria are resistant to penicillin. What caused this phenomenon?

Which is a biochemical process carried out by both obligate and facultative anaerobes?

If a laboratory uses hazardous chemicals, it must

What stain is used for medically important fungi?

The outer cell wall of the gram-negative bacteria serves three important functions, which includes all the following, except: