Two OF tubes are removed from the incubator. The tubes do not contain a mineral oil overlay and caps are loose. The tech notices that both tubes have turned yellow. What can be concluded about this test?

The organism that is commonly associated with the production of cold agglutinins is:

Terminal spores are commonly seen in gram stains of what organism?

A thin anaerobic gram negative bacillus with tapered ends was isolated from an empyema and was found to be indole positive, lipase negative, and inhibited by 20% bile.  Colonies were described as “speckled” or resembling “ground glass” and fluoresced weakly when exposed to UV light.  The most probable identification of this isolate would be:

Although the culture of organisms in the family Spirochaetaceae is not generally recommended, Kelly’s medium has been useful in cultivating species of:

Rickettsia and Ehrlichia species all:

The primary stain in the Ziehl-Neesen method of staining is forced into the lipid cell wall with:

The image below shows the results of O-F media. The organism is considered to be

A first morning sputum is received for culture of mycobacteria. It is digested and concentrated by the NALC method. Two Lowenstein Jensen slants are incubated in the dark at 35 degrees C with 5-10% CO2. the smears reveal acid fast bacilli and after 7 days, no growth appears on the slants. The best explanation is:

A Gram-negative bacillus isolated from a stool specimen which appears curved on the Gram stain and grows best at 42 degrees C in reduced oxygen and increased carbon dioxide is most likely: