MicrobeWorld

Illustration of Toxoplasma gondii-extraintestinal cycle in cells of mammals Read More

Dark-field preparation of Treponema pallidum. (approx X1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Cladosporium trichoides hyphae and brown sclerotic cells in abscess of abdominal wall. H & E stain Read More

Exophiala jeanselmei. Note long slender conidiophores with terminal sporulation. Secondary budding of conidia is rare. LCB mount. Read More

Magnified 1125X, this photomicrograph revealed some of the ultrastructural morphology displayed by the dematiaceous (pigmented) filamentous fungus, Phialophora richardsiae.

Note the septate hyphae from which sprout the short conidiophores, and still further distally one can see the flask-shap... Read More

Electron micrograph of one cell of Proteus vulgaris with numerous flagella Read More

photograph of carcass of swine showing lesions of swine erysipelas (b&w) Read More

Mycena species on rotten and decaying wood Read More

This photomicrograph is showing Neisseria gonorrhoeae in a cervical smear using the Gram-stain technique. Thanks to the CDC's PHIL for the image. Read More

Trichophyton mentagrophytes colony on Sabouraud's agar (1.54) Read More

Gram-positive cocci showing various morphological arrangements including diplococcus and tetrads. (approx. X970). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Monascus sp. Cleistothecium with asci. Nomarski. (800X) Read More

This negatively-stained transmission electron micrograph (TEM) revealed the presence of Rubella virus virions, as they were in the process of budding from the host cell surface to be freed into the host’s system, thereby, producing an enveloped virus particle, which means that after budding, the... Read More

Coccidioidomycosis. Map of endemic areas (outlined on black) in South America Read More

Blastomyces dermatitidis. Yeast stage from 2-day culture on blood agar at 37 . Note double refractile cell wall Read More

Gram-negative rods –Alcaligenes faecalis species (approx X1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Legionella pneumophilia in yolk sac of embryonated egg as stained by the Gimenez method Read More

This is an image of Clostridium difficile colonies grown on cycloserine mannitol agar after 48 hours.

C. difficile, an anaerobic gram-positive rod, is the most frequently identified cause of Antibiotic-Associated Diarrhea (AAC). It accounts for approximately 15-25% of all episodes of AAC.

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Unstained, temporary wet mount showing size relationship between yeast cells (Saccharomyces) and bacterial rods (Bacillus subtilis). (approx. X 100). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Science cartoonist Jay Hosler drafted this comic for the cover of the program for The Allegheny Branch of The American Society for Microbiology (ABASM) meeting at Juniata College this weekend (November 20th and 21st). Amusing. To see more of Hosler's work visit Read More