A significant number of Gram negative bacilli are isolated from the urine of an otherwise healthy 23 year-old woman. The results of the biochemical analysis demonstrate: Phenylalanine deaminase = green after addition of FeCl3 Indole = red ring after Kovac’s Methyl red = red Voges-Proskauer = colorless Arginine dihydrolase = yellow Lysine decarboxylase = yellow Ornithine decarboxylase = yellow Decarboxylase base = yellow TSI = yellow slant, black butt The most likely genus and species of this organism is:
Category: Uncategorized
Acinetobacter species are similar to other Neissericaceae wi…
Acinetobacter species are similar to other Neissericaceae with the notable exception that Acinetobacter are:
Both sets of blood cultures from a 44 year-old male patient…
Both sets of blood cultures from a 44 year-old male patient (post appendectomy) grew Gram negative bacilli from both the aerobic and anaerobic bottles after 18 hours incubation. Biochemical reactions demonstrate the following: MAC = pink donuts BAP = luxuriant growth TSI = acid / H2S Indole = negative Motility = positive Citrate = positive MR/VP = +/0 Ornithine = negative Lysine decarboxylase = negative PAD = negative The most likely genus and species of this organism is:
Gram positive cocci in clusters and tetrads were seen in a g…
Gram positive cocci in clusters and tetrads were seen in a gram stain from a blood culture bottle after 4 days of incubation. The catalase test was positive. What should be done next?
The Method acting style developed from what other acting sty…
The Method acting style developed from what other acting style?
A penile discharge is submitted to the microbiology labortor…
A penile discharge is submitted to the microbiology labortory for Gram stain. Upon examination of the Gram stain, you observe many PMN’s and Gram- negative diplococci. Further examination demonstrates that in several fields the diplococci are found intracellularly within PMN’s. Your report to the physician will consist of:
Susceptibility testing performed on quality control organism…
Susceptibility testing performed on quality control organisms using a new media lot number yielded zone sizes that were too large for all antibiotics tested. The testing was repeated using media from a previously used lot number, and all zone sizes were acceptable. Which of the following best explains the unacceptable zone sizes?
This image is from the BAP of a sputum culture. The sample w…
This image is from the BAP of a sputum culture. The sample was collected via leukens tube from a 72 year-old patient in the ICU. There was no growth on the MAC and the growth on the CHOC plate resembles the BAP. What is the next step in the work-up?
A slaughterhouse worker accidentally cut her finger while pr…
A slaughterhouse worker accidentally cut her finger while preparing pork products. She developed a painful, localized, purple-ish/red lesion. A culture from her wound grew Gram positive pleomorphic bacilli on BAP. The organism was non-motile, catalase negative and produced a small amount of H2S in a TSI slant. The most likely cause of her infection is:
The play “Miss Julie” is an example of what acting style?
The play “Miss Julie” is an example of what acting style?