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A dark pigmented colony is isolated from the leg wound of a fisherman from Florida. The gram-negativ

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A dark pigmented colony is isolated from the leg wound of a fisherman from Florida. The gram-negativ

A dark pigmented colony is isolated from the leg wound of a fisherman from Florida. The gram-negative rod grows on sheep blood and MacConkey agars. The organism provides the following reactions:
               TSI: K/A           Indole: no color change        Lysine: no color change
               1% NaCL: no growth      Arginine: purple        Ornithine: no color change
               DNase: pink halo around the area of organism inoculum
The microbiologist cannot read the oxidase reaction due to the dark pigment. What can he do to help achieve a valid oxidase reaction?
     a. Perform a modified oxidase test
     b. Grow the organism under anaerobic conditions and retest
     c. The oxidase test is not necessary for the identification of this organism
     d. Grow the organism on a non-nutrient agar and retest

Textbook

Clinical Laboratory Microbiology: A Practical Approach

Edition: 1^st

Authors: Kiser, Payne, Taff

Read 192 times

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lubadub Author

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8 years ago

This works! Perfect

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rawemotions

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8 years ago

Thanks for the feedback Slight Smile

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