Enterobacter cloacae: Introduction, Identification Features, Keynotes, and Enterobacter Footages

Encapsulated strain of Enterobacter aerogenes on MacConkey medium

Introduction of Enterobacter cloacae Enterobacter cloacae is a facultative anaerobic Gram-negative bacterium of size 0.3-0.6 x 0.8-2.0 μm. It is lacking capsule and spore and it is motile due to flagella which is a member of the Enterobacteriaceae family. E. cloacae is the normal gut …

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Shigella flexneri: Introduction, Identification Features, Keynotes, and Shigella Footages

Shigella boydii colony morphology on XLD agar

Introduction of Shigella flexneri Shigella are Gram-negative bacilli measuring about 1-3 µm X 0.5 µm. They are non-motile, non-encapsulated, non-sporing, and non-acid-fast bacteria belonging to the family Enterobacteriaceae. They cause an infectious disease called Shigellosis. There are four species or serogroups based on biochemical and …

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Citrobacter koseri: Introduction, Identification Features, and Keynotes

Citrobacter koseri growth on CLED agar

Introduction of Citrobacter koseri Citrobacter koseri is previously known as Citrobacter diversus. It is a facultative anaerobe of 1.0 × 2.0–6.0 μm in size, motile, non-capsulated, and gram-negative bacillus of the family Enterobacteriaceae. Citrobacter koseri acts as etiological agents of various pathological conditions like urinary tract infections (UTIs), …

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Salmonella Paratyphi: Introduction, Identification Features, Keynotes, and Salmonella Footages

Salmonella Serovar Paratyphi growth on Nutrient agar, Blood agar, MacConkey medium, BHI broth and Biochemical reactions in TSI, SIM, citrate and urea agar

Introduction Salmonella Paratyphi (serovar) belongs to Enterobacteriaceae and thus is a Gram-negative bacterium causing mild gastroenteritis to a life-threatening bloodstream infection. It causes paratyphoid fever and it is restricted to humans. Proper sanitation and hygiene may decrease its infection chance. Travelers must be cautious during …

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Proteus vulgaris: Introduction, Identification Features, Keynotes, and Proteus Footages

Dienes phenomenon of Proteus vulgaris strains

The genus Proteus was discovered in 1885 by Hauser and it is also named after a Greek god.  Proteus is a member of the family, Enterobacteriaceae and it is a Gram-negative, oxidase-negative, fimbriated, motile, non-sporing rod-shaped bacterium without capsule and having a size of 0.4–0.8 μm in diameter and …

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Complete Thyroid Package: Introduction, Related assays, and Keynotes

Complete Thyroid Package: Introduction, Related assays, and Keynotes

Introduction of Complete Thyroid Package Complete Thyroid Package is a group of clinical laboratory tests. It uses to say the effects of thyroid disorder (hypothyroidism or hyperthyroidism) on our body and their monitoring. Normal thyroid stimulating hormone (TSH) controls the basal metabolic rate of the …

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Aspergillus: Introduction, Classification, Colony Morphology, Pathogenesis, Clinical Features, Lab Diagnosis, Treatment, and Prevention

Aspergillus niger Colony Morphology on Sabouraud Dextrose Agar (SDA) after 3 days of incubation

Introduction of Aspergillus The genus Aspergillus has more than 180 species, among them, 38  are responsible to cause disease (able to grow at 37◦C. They are common in the environment. Aspergillus species are emerging pathogens which are ubiquitous molds that infect immunocompetent ( rarely) and immunocompromised …

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