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GasPak System (The Anaerobic jar)

Agar plates are inoculated and placed in the jar. Water is added to the GasPak generator envelope, causing the evolution of H2 and CO2. he hydrogen reacts with oxygen on the surface ...

Nagler’s reaction (Lecithinase test)

Nagler’s reaction is a test for the identification of alpha toxin of Clostridium perfringens. The toxin is lecithinase which hydrolyses the phospholipid lecithin (a component ...

Media used for Cultivation of Anaerobic Bacteria

Cooked Meat Broth (CMB) is recommended for the cultivation of aerobic, microaerophilic, and anaerobic microorganisms, especially Clostridium species. The medium can be inoculated with ...

Most Common Species of Clostridium

Clostridium consists of around 100 species that include common free-living bacteria as well as important pathogens There are five main species responsible for disease in humans. C. ...

Muddy brown granular casts

Urine sediment showing multiple, muddy brown granular casts.  These findings are highly suggestive of acute tubular necrosis in a patient with Acute kidney injury (Acute renal failure).

Clostridium Characteristics

Clostridium are Gram-positive obligate anaerobes bacteria capable of producing endospores which protect them in harmful environment .  Individual cells are rod shaped while the spores ...

Tinea versicolor caused by Malassezia furfur infection and laboratory diagnosis

The yeast-like colonies seen growing on the blood agar surface in the image below are lipid-dependent and grow only where olive oil had been applied. This is characteristic of the ...

Lactophenol Cotton Blue Stain

Lactophenol Cotton Blue Stain is recommended for mounting and staining yeast and molds. Lactophenol Cotton Blue Stain is formulated with lactophenol, which serves as a mounting fluid, ...

Purple Urine Bag Syndrome

Purple urine bag syndrome (PUBS) is a rare condition, in which the patient has a purple-colored urine tubes or bags following urinary catheterization for hours to months. It is usually ...

Microscopic Morphologic Features of Yeast

The cells shown in Image below are arthroconidia, some showing buds coming off of adjacent corners. This feature is diagnostic for Trichosporon species. The yeast cells of Cryptococcus ...

Isospora belli in wet mount stool smear

Stool smear, wet mount preparation showing Isospora belli. Oocysts are elongated ellipsoidal in shape, one sporoblast or two sporocysts appear inside. Oocyst wall is thin and colorless, ...

Serratia marcescens colonies features on 30c incubation

Serratia marcescens. These gram negative rods produce mucoid colonies which have entire margins and umbonate elevation. Note that there are both red and white colonies present on ...
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