Genus Salmonella: Salmonella is an enterobacteria (fermentative, facultative anaerobes, oxidase -ve, gram -ve rods, catalase +ve). Motile (generally), aerogenic, non-lactose fermenting urease -ve, citrate +ve, […]
Mycobacterium leprae Mycobacterium leprae is the only pathogenic bacteria of man that has not yet been cultivated in vitro and thus fails to fulfill the […]
Yersinia pestis The name Yersinia is given after the French bacteriologist Alexander Yersinia who discovered the organism causing plague in 1894. At present 11 species […]
Transmission of plague: Plague is a zoonotic infection transmitted to human by the bite of an infected rat flea. Infection may also be transferred by […]
Listeria species The genus Listeria are cocobacillary to bacillus shaped gram positive bacteria. They are non-sporing, non-capsulated and non-acid fast They are aerobic and microaerophilic […]
Mycobacteria The name mycobacterium is derived from the word “mold” meaning fungus like bacterium. Mycobacterium comprises acid-fast bacilli ie. Resistant to decolorization by weak mineral […]
Vibrio spp The name ‘vibrio’ is derived from the characteristics vibratory mortility. Vibrio are Gram negative rigid, curved rods that are actively motile by means […]
Veillonella: Characteristics, Culture, clinical significance, lab diagnosis and treatment Characteristics of Veillonella Veillonella are anaerobic Gram Negative cocci Size: 0.3-0.5 µm in diameter Arrangement: found […]
Most probable number (MPN) method for counting coliform MPN method utilizes 3 set method or 4 set method for counting coliform in water. However three […]
Difference between Gram positive and Gram negative bacteria SN. Point of distinction in characteristics Gram Positive bacteria Gram Negative bacteria 1. Gram staining reaction Retain […]
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