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

Woolsorter’s disease is caused by infection with:

Enterococcus faecalis is:

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?

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:

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

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

Woolsorter’s disease is caused by infection with:

Enterococcus faecalis is:

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?