Can Proteus grow on nutrient agar?
Proteus mirabilis, P. vulgaris are widely recognised as human pathogens. These can grow on ordinary media like nutrient agar with a characteristic fishy or seminal odour.
How do you identify Proteus vulgaris?
Proteus vulgaris is a rod-shaped, nitrate-reducing, indole-positive and catalase-positive, hydrogen sulfide-producing, Gram-negative bacterium that inhabits the intestinal tracts of humans and animals. It can be found in soil, water, and fecal matter.
Which media used for the isolation of Proteus vulgaris?
Abstract. A medium containing heart infusion agar supplemented with bile salts, lithium chloride, sodium thiosulfate, and sodium citrate was developed for the selective growth of Proteus.
How does E coli look on nutrient agar?
Cultural Characteristics of Escherichia Coli: On Nutrient agar, colonies are large, thick, greyish white, moist, smooth, opaque or translucent discs. Some strains may form “mucoid ” colonies. On MacConkey agar medium, colonies are bright pink due to lactose fermentation.
Which bacteria produces swarming on blood agar?
The Bacteriodetes — a group of bacteria that includes Cytophaga, Flavobacteria and Bacterioides — and the Myxobacteria, all lacking flagella, form flat spreading colonies on agar that Stanier 6, 7 described as swarms. All these bacteria are long flexible rods that spread rapidly on moist agar.
Does Proteus vulgaris grow on MacConkey Agar?
For pus & urine samples, blood agar and MacConkey agar are commonly used. Proteus grow on the Blood agar plate in successive waves to form a thin filmy layer of concentric circles ( swarming). Proteus do not swarm in the MacConkey agar medium and form smooth, pale or colourless (NLF) colonies.
Is Proteus vulgaris resistant to erythromycin?
vulgaris. Proteus species were susceptible to the antibiotics in varying amounts and susceptibility declined in the following order: Amikacin and Gentamicin (95.9%), Levofloxacin (93.0%), Ciprofloxacin and Penicillin (86.5%), Ofloxacin (82.4%), Erythromycin (81.1%), Ampicillin (77.0%) and Tetracycline (68.91%).