Colony Morphology of Proteus mirabilis on CLED Agar: Diagnostic Features and Clinical Significance

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On CLED (Cystine-Lactose-Electrolyte-Deficient) agar, Proteus mirabilis typically exhibits distinctive colony morphology that aids in its identification. The colonies are medium to large, translucent, and pale yellow in color. A key characteristic of P. mirabilis on CLED agar is its inability to swarm, which is a notable difference from its behavior on non-inhibitory media.

The colonies appear smooth, with well-defined edges, and often display a moist surface. The lack of swarming on CLED agar is crucial for isolating and identifying P. mirabilis in mixed cultures, as it prevents the bacterium from overgrowing other organisms.

This morphology on CLED agar is particularly important for diagnosing urinary tract infections (UTIs) and other clinical conditions caused by P. mirabilis. Recognizing these features ensures accurate identification and helps guide appropriate antimicrobial therapy, contributing to effective patient management.

Proteus mirabilis, CLED agar, colony morphology, non-swarming, translucent colonies, pale yellow colonies, medium colonies, large colonies, smooth edges, well-defined edges, moist surface, diagnostic features, clinical significance, urinary tract infections, UTIs, bacterial identification, laboratory diagnosis, culture media, microbiology, growth characteristics, isolation, mixed cultures, antimicrobial therapy, patient management, pathogen, swarming inhibition, cystine-lactose-electrolyte-deficient, infection diagnosis, clinical microbiology, colony growth.