A sputum sample submitted for TB culture grew numerous orange-colored colonies that stained acid-fast after three weeks of incubation in 37° C in the dark. These characteristics are consistent with identification of this isolate as a:

In the clinical microbiology laboratory, organisms that might be transmitted through aerosols are usually handled:

Which of the following antibiotics are active against gram-positive bacteria and are used to treat infections caused by penicillinase-producing strains of Staphylococcus?

A sputum sample from a 60 year old male with pneumonia grew numerous colonies of a gram positive diplococcus that was alpha hemolytic on 5% sheep blood agar and catalase negative. Further testing of these colonies should include a test for:

These structures were observed in an individual who recently went backpacking and canoeing in the Boundry Waters of northern Wisconsin. The patient was experiencing bouts of diarrhea but was otherwise healthy. These structures are typical of: m58__xid7922607_2.jpg

In the clinical Microbiology laboratory, direct smears are often set up on all of the following specimens, EXCEPT?

These eggs were found on a scotch tape test of a 3 year old child attending daycare. What does the child have? m56__xid7922605_2.jpg

Enterococcus faecalis is:

This virus that causes chicken pox may remain latent for many years and then reactivate as a disease known as:

From a sputum specimen, an acid-fast bacillus grows on Lowenstein-Jensen medium within 18 days at 35 degrees. Initially, the colonies are buff, raised and rough when grown in the dark. After exposure to light, no change in pigmentation is detectable. On examination under 10x magnification and on stain, serpentine cording is observed, which demonstrates that this organism produces “Cording Factor”. Which of the following characteristics would confirm the identity of the most likely etiologic agent?