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Blood Falls - Subglacial outflow from the Taylor Glacier in McMurdo

Subglacial outflow from the Taylor Glacier in the McMurdo Dry Valleys, Antarctica. Iron and salt precipitates form where subglacial brine flows from the Taylor Glacier, lending a bright red color to the glacier snout, which is commonly referred to as Blood Falls. The episodic release of subglaci... Read More

6.5% NaCl Media

Important ingredients: 6.5% salt, dextrose, bromcresol purple
Differential/Selective: used to test for salt tolerance and can be used to identify enterococcal group D streptococci. NaCl is a selective agent and those organisms that can grow in higher salt concentrations also ferment the dextro... Read More

Viruses represented as lace doilies

Artist Laura Splan has created lace doilies, aka ornamental mats, of the herpes and SARS viruses.

Excerpt from Artists's Bio: My work explores perceptions of beauty and horror, comfort and discomfort. I use anatomical and medical imagery as a point of departure to explore these dualities an... Read More

b320-1 Clostridium spp. from pet food (1000x)

b320-1 Clostridium spp. from pet food (1000x) Read More

Streptococcus pyogenes Gram Stain

Gram stain done on S. pyogenes showing the characteristic long G+ streptococcus chains. Culture grown on blood agar for 48 hrs at 37 degree’s C. Read More

Micrococcus lutea

Circular, entire, smooth, yellow colonies of Micrococcus lutea. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Hymenomonas sp.

Phase contrast flash of Hymenomonas sp., a coccolithophorid phytoflagellate Read More

photograph of hematoma-like swelling of the caruncle of turkeys infected with Erysipelothrix rhusiopathiae

photograph of hematoma-like swelling of the caruncle of turkeys infected with Erysipelothrix rhusiopathiae Read More

Fungus in my brothers sports drink

Unopened sports drink containing a fungal contaminant Read More

Mr. Ed's bane/zoonotic villains #4

The mosquito - God's cruelest instrument to ensure his creations stay in check?
The mosquito - proof that Evolution is a malevolent mistress that sups on human & animal misery alike?
The mosquito - spreader of VEE: Venezuelan equine encephalitis, which afflicts not only horses, donkeys, zebras... Read More

Colony of Streptomyces

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

Aquaspirillum serpens

A simple stain done on a stock culture of Aquaspirillum serpens to look at cell shape. This culture was grown in TSB at room temperature, ~21 degrees C, for several months. Aquaspirillum is a slow grower normally found in pond water. A characteristic spiral rod can be seen in the center of ... Read More

Listeria monocytogenes against brain macrophages.

Listeria monocytogenes has a particular tropism for the central nervous system. To gain knowledge about the immune response elicited by L. monocytogenes in the brain, we used a rat ex-vivo organotypic nervous system culture as a model for Listeria infection. Brain sections were maintained severa... Read More

Female blacklegged deer tick, Ixodes scapularis

With its abdomen engorged with a host blood meal, this image depicts a lateral, or side view of a female blacklegged, or deer tick, Ixodes scapularis.
The blacklegged or deer tick, Ixodes scapularis, transmits Lyme disease, a disease caused by a spiral shaped bacterial microbe, Borrelia burgdor... Read More

Plasmodium gallinaceum

This is a scanning electron micrograph of Plasmodium gallinaceum, which causes malaria in poultry, invading the midgut of the Aedes aegypti mosquito.
Credit: NIAID

"Fighting Drug-Resistant Malaria"
Rick Fairhurst and Others at NIAID Go Global
By Kristofor Langlais, NICHD, for the NIH Catal... Read More

Methicillin-resistant Staphylococcus aureus

Scanning electron micrograph of methicillin-resistant Staphylococcus aureus and a dead human neutrophil. Credit: National Institutes of Health/Department of Health and Human Services (NIAID). Read More

Salmonella grown on Salmonella-Shigella (S-S) Agar

The following picture shows the isolated black colonies of Salmonella on Salmonella-Shigella (S-S) Agar. S-S Agar is used as a selective and differential medium for the isolation of Salmonella and some Shigella species. The inclusion of bile salts is to inhibit gram-positive organisms. Ferric ci... Read More

Histoplasma capsulatum in mitral valve

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

S. aureus on MSA Plate

For my medical microbiology course at Kutztown University of Pennsylvania we were asked to take a sample from our nose. Using a sterile cotton swab, a sample was taken from a nostril and then spread onto the Mannitol Salt Agar plate supplied. The plate was incubated at 37 degrees Celsius, then e... Read More

BacterioFiles 213 - Bird Bacteria Bolster Babies

This episode: Hoopoes inoculate their eggs with protective bacteria!

(6.5 MB, 7 minutes)

Show notes: 
News item/ Read More

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