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A sample of ear drainage is cultured from a 14 month old infant. The sample grows a small pleomorphic gram negative bacilli on chocolate agar. The organism did not grow on SBA or MAC. The organism was oxidase positive. What is the most likely identification of this organism?

Which trait is characteristic of anaerobic infection?

A widely used nontreponemal serologic assay is the ________ test.

A CSF fluid shows increased PMNs, low glucose, and high protein. What is suspected?

The nonpathogenic Mycobacteriumcommonly found in tap water which can cause false positive smears is

Hektoen Enteric agar serves which purpose when used in the bacterial fecal culture?

The following image was taken from a gram stain of a sinus drainage. What is the most probable identification of this organism?

A microbiologist is reading an anaerobic plate from an intestinal abscess. There is growth on the BBE plate: gray colonies with a brown color in the area around the colonies. There is also a dark precipitate in the medium in the areas of heavy growth. He gram stains the colonies and observes gram-negative coccobacilli. What is the presumptive identification of this organism?

The following results were obtained when an ampicillin microdilution test was performed: TEST WELL RESULT Sterility Turbid Growth Turbid 1 µg/mL Turbid 2 µg/mL Turbid 4 µg/mL Turbid 8 µg/mL Turbid 16 µg/mL Turbid 32 µg/mL Turbid An evaluation of these results indicates that the:

Which category of media can be described as containing some factor (or factors) that allows colonies of one bacterial species or type to exhibit certain metabolic or culture characteristics that can be used to distinguish them from other bacteria growing on the same agar plate?