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Getting Started with MicrobeWorld

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Fungus in my brothers sports drink

Unopened sports drink containing a fungal contaminant Read More

D- Zone Test for phenotypic detection of Inducible clindamycin Resistance

A positive D test indicates that the presence of macrolide-inducible resistance to clindamycin produced by an inducible methylase enzyme that alters the common ribosomal binding site for macrolides, clindamycin and the group B streptogrammins (quinupristin). This cross-resistance, called the ML... Read More

Trichome

Pictured is a plant structure called a trichome that was found in a felines' urine sediment collected by cystocentesis. It is surrounded by many cocci and debris. The picture was taken with a smartphone at 400x magnification with no staining. Read More

Beautiful image of different microbes in CLED medium

This image results from a project called "Initiation to microbiology investigation" accomplished by young students, where they collected a sample from a table surface and by inoculation they put it in CLED (cystine lactose electrolyte deficient) medium. Beautiful colonies of bacteria and fungu... Read More

Delftia acidovorans

Delftia acidovorans (formerly Comamonas acidovorans) is an aerobic gram-negative rod. It is unique because produces an orange color in the medium with the addition of Kovac's indole because of the production of anthranilic acid from typtone, though the organism is biochemically indole-negative. ... Read More

Halloween microbes

Strep agalactiae (Group B Strep) streaked out on Granada plates. Usually this media is used to screen for Group B in pregnant patients, the strep will grow as bright orange colonies while any other growth will be colorless. Perfect for a little Halloween fun...follow me on instagram @stylish_str... Read More

Spiraled microbe

Photograph of 400X magnified image of biogas digestor sample. A strange spiraled type microbe seen (probably like left handed DNA helix). The microbe is shown with an arrow. Has anyone seen such microbial structure? Read More

Unknown - Identification Help Please

I am in need of some assistance in Identifying a bacteria species. I am unable to locate a match in Bergey's Manual. Our copy is 20 years out of date. I know the photo isnt great, it was taken with a cell phone. The colonies are hot pink and were cultured on TSA slant. It is gram + micrococci, i... Read More

Great wave off Candida

Candida albicans is a yeast species that is part of the commensal microbiota of the body. Weakened or impaired immune system can lead to yeast infections mostly produced by Candida albicans, although other species like Candida parapsilosis, Candida glabrata and Candida tropicalis among others ar... Read More

Contaminant snowman

Some holiday fun from last winter composed of different collected plate contaminants. Based on colony morphology and wet mounts, these bacteria are likely to be: Staphylococcus sp. (white), Serratia marcescens (dark orange), and Micrococcus luteus (creamy yellow). The design was incubated for 5-... Read More

Helicobacter fennelliae from blood culture

Helicobacter is a Gram-negative rod with a helical shape on gram stain. The most known strain is H. pylori, which causes ulcers and chronic gastritis and is said to affect up to 50% of the human population. This particular strain, Helicobacter fennelliae is most commonly found in the feces an... Read More

TWiP 101: Is it round or is it flat?

The doctors TWiP solve the case of the Woman with White Worms, and explore the role of a secreted growth factor from a carcinogenic parasite in wound healing and angiogenesis.


Hosts:  Read More

Paenibacillus glucanolyticus spore

Paenibacillus species have been isolated from a wide variety of sources including soil, water, the plant rhizosphere, plant materials, food, fodder, faeces and diseased insect larvae. They are facultative anaerobes or strict aerobes and mostly motile, endospore forming rods. This is the first ti... Read More

Unknown environmental Contaminant on blood agar plate streaked with S. pyogenes

A streak plate of Strep pyogenes on blood agar, stock culture used for class, was kept at room temp for 1 month. Before disposal a contaminant, presumably environmental, was seen on the plate. The pigment was opaque tan/yellow and with a mucoid surface. Lobate marigins with raised irregular-rh... Read More

Streptococcus pneumoniae mucoid strain

Streptococcus pneumoniae cells are Gram-positive, lancet-shaped cocci. Usually, they are seen as pairs of cocci, but they may also occur singly and in short chains. In this photo a mucoid strain on blood agar showing alpha hemolysis (green zone surrounding colonies). Note the zone of inhibition ... Read More

Proteus vulgaris/Swarming

Streak plate of Proteus vulgaris. The plate was incubated at 37 degree C for 48 hrs then held at room temperature for 1 week. Swarming, white growth with finger like projections at the outer edges, around the circular solated colonies, circular white/beige opaque colonies, was not seen until ... Read More

Swarming Motility of Pseudomonas aeruginosa

Strain: Pseudomonas aeruginosa PA14
Medium: M8 minimal medium agar plates
Incubation Conditions: 48 hours at 37°C
Pseudomonas aeruginosa is a gram-negative, rod-shaped and monoflagellated bacterium that has an incredible nutritional versatility. Swarming motility, a flagellum-dependent behavi... Read More

Fusobacterium mortiferum

This is a picture of a Gram stain of an anaerobic blood culture. This pleomorfic bacteria, were Gram negative filamentous bacilli with large round bodies. The identification by MALDI-TOF was Fusobacterium mortiferum. The patient has pancreatitis. I agree if you want to share this picture, since ... Read More

Can You Protect Your Tummy From Traveler's Diarrhea?

It goes by many names: Delhi belly. Montezuma's revenge. The Aztec two-step. But doctors use one not-so-glamorous term: traveler's diarrhea. Read More

The #LuxArt2015 Art Competition By My Students!

Because of all the recent interest in "microbiological art," I decided to challenge my Biology 350 students to "paint" using luminous bacteria. We have a balloting process, tallied the results, and made some appropriate awards! I think the world of my students, and I hope you enjoy this view i... Read More
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