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Histoplasma capsulatum in mitral valve

Histoplasma capsulatum in mitral valve. Yeasts and rare hyphal growth in vivo Read More

Colony of Streptomyces

Colony of Streptomyces (sp.) on Sabouraud's dextrose agar, incubated at 30C Read More

Herpes simplex virus

Electron micrograph of Herpes simplex virus. Giemsa stain Read More

Gram-stained preparation of Bacillus subtilis

Gram-stained preparation of Bacillus subtilis showing rods, and spores (empty areas). (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Art and Microbiology

A collection of funny images about microbiology. Although the text is in Spanish language, it can be easily understood. Read More

Rubella virus virions

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

Exophiala jeanselmei

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

Trichophyton mentagrophytes

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

Paecilomyces sp.

Paecilomyces sp. Tapered conidiophores (430X) Read More

Byssochlamys sp.

Byssochlamys sp. Penicillate sporulation (1008X) Read More

Mycobacterium smegmatis colonies on lowenstein-jensen media (2x)

Mycobacterium smegmatis colonies on lowenstein-jensen media (2x) Read More

Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing microcolonies characteristics of broth-grown Mycoplasma pneumoniae

Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing microcolonies characteristics of broth-grown Mycoplasma pneumoniae Read More

Escherichia coli - tight junction disassembly

This pair of confocal micrographs demonstrates how a disease-causing strain of E. coli bacteria brings about diarrhoea by breaking down the waterproof barriers between the cells. The bacteria are seen as small red dots attached to the surface of intestinal cells making tiny pedestals out of one ... Read More

Candida albicans

Pseudohyphae of Candida albicans in brain. PAS stain (250X) Read More

Bacteriophage P22

Cross-section through the center of a three-dimensional (3D) reconstruction of P22 phage, which is a virus that infects Salmonella bacteria. P22 contains many copies each of nine different viral proteins and a single copy of a double-stranded DNA genome (shown in green). The centrally located po... Read More

Colorized Marburg virus particles viewed with a transmission electron microscope

Marburg hemorrhagic fever (Marburg HF) is a rare, severe type of hemorrhagic fever which affects both humans and non-human primates. Caused by a genetically unique zoonotic (that is, animal-borne) RNA virus of the filovirus family, its recognition led to the creation of this virus family. The fi... Read More

Klebsiella pneumoniae

Large (about 5 mm in diameter), lactose positive colonies of Klebsiella pneumoniae on desoxycholate-citrate agar. Cultivation 37°C, 24 hours.

Klebsiella pneumoniae is a common source of hospital-acquired infections. Some of the strains can carry plasmids that harbour genes conferring resistan... Read More

Neisseria meningitidis

Neisseria meningitidis. Differential sugar reactions. (1-8) Read More

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

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

Missing Carl Woese---RIP!

I comment a bit, as an educator, about the loss of Carl Woese. Not only the importance of his discoveries, but how he went about his work, remains of great value. Read More

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