Pseudomonas fluorescens

An aerobic, oxidase-positive, gram-negative bacillus that resembles Pseudomonas aeruginosa but does not produce pyocyanin. There are seven biotypes (A – F) of Pseudomonas fluorescens. It has been isolated environmentally from soil, water, plants, and contaminated foodstuffs, including milk. It is rarely isolated from clinical specimens because the majority of isolates do not grow at 35oC.

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