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Staphylococcus aureus

Scanning electromicrograph of Staphylococcus aureus bacteria. Credit: National Institutes of Health/Department of Health and Human Services (NIAID). Read More

Conidiophores in Neurospora crassa

This is an 3D image of conidiophores of the filamentous fungus Neurospora crassa. Conidiophores are hyphae which differentiate to produce asexual structures named spores or conidia. The image taken using a confocal microscope shows conidiophores stained with a fluorophore which stains components... Read More

You'll Want To Wash Your Hands Immediately After Reading This (Infographic)

Germaphobes, maybe you're on to something.

Sickness-causing bacteria and viruses can lurk on surfaces long after they're expelled in an infected person's sneeze or snot. Some can even stay on a surface for months, given the right conditions. While the ability of these microorganisms to actual... Read More

Human African trypanosomiasis

A false-coloured scanning electron microscope image of an African trypanosome, the parasite which causes sleeping sickness. Read More

Mycobacterium smegmatis

Streak plate of Mycobacterium smegmatis grown on TSA for 96 hrs. Read More

Bacterial Artistry - Serratia marcesens

Serratia marcesens is a Gram-negative, rod-shaped bacterium that is commonly found in soil, water, on plants and in animals and thrives in damp conditions. This organism is well known for its production of the blood red pigment, prodigiosin. Production of prodigiosin can be influenced by several... Read More

Physarum polycephalum

Physarum polycephalum, slime mold, grown in a large perti plate on moist paper towels using oatmeal as the food source. Culture was grown in the dark at room temperature. The paper towel was moistened every day with tap water. After 3 week’s the culture formed sporangia (fruiting bodies). Im... Read More

Dangerous enterohemorrhagic bacteria E. coli

Most Escherichia coli (E.coli) strains are harmless.But some, like enterohemorrhagic E. coli (EHEC), are a hazard to human health and life. Read More

Have a Happy Bioluminescent Fourth of July!

In this post from my Microbiology/Education blog, I wish everyone a lovely day of food, fellowship, and fireworks. My laboratory brings you our own "fireworks" through bioluminescence! Read More

Endospore Stain Bacillus cereus

B. cereus was grown on urea agar for 6 days at 37 degrees C to induce spore formation.
The endospore stain was done using malachite green as the primary stain and safranin as counter the stain. Malachite green was applied to the smear and set over a steaming water bath for 10 min (stain was no... Read More

Enterobacter aerogenes on MacConkey Agar (Mac)

Streak plate isolation of Enterobacter aerogenes grown on MacConkey agar for 24 hours at 37 degree's. Colonies grow pink due to fermentation of lactose. Read More

E.coli on MacConkey Agar (Mac)

Streak plate isolation of E. coli on MacConkey Agar grown for 24 hrs at 37 degrees. E. coli demonstrates strong lactose fermentation indicated by the bright pink halo, bile precipitant around the colonies, and pink colony growth. Read More

HIV-infected H9 T Cell

Scanning electron micrograph of an HIV-infected H9 T cell. Credit: National Institutes of Health/Department of Health and Human Services (NIAID). Read More

ASM GM 2014 - Where Pathogens Can Linger on Airplanes

Many air travelers are concerned about the risks of catching a disease from other passengers given the long time spent in crowded air cabins. New research shows disease-causing bacteria can linger on surfaces commonly found in airplane cabins for days, even up to a week. Participants discuss ... Read More

Pseudomonas paints a picture!

A student and I painted with bacteria and this is what happened! We used a method similar to that used by artist Sarah Roberts (UK) and microbiologist Simon Park.

Motility agar plates were prepared and painted with watercolor paint before inoculation with P. aeruginosa. After 7 days at room t... Read More

Bacillus subtilis

Gram stain of B. subtilis showing characteristic G +streptobacillus morphology. 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

Cartography of the Human Body

Artist Sonja Bäumel explores the skin microbiome in her project Cartography of the Human Body. Bacteria isolated from Bäumel’s skin were characterized and grown individually, then used to reconstruct an artificial microbiome with many layers of differently-colored species. Giant petri dishes gre... Read More

Antibiotics work against viruses

Got your attention, eh? This page discusses why so many people believe that antibiotics kill viruses, and what you can do about that myth. Actually, it's not even a myth ... antibiotics DO work against viruses. The problem is that the word "antibiotics" is redefined by some to be a synonym of... Read More

New drugs for bad bugs

Washington University in St Louis chemist Timothy Wencewicz says we’ll stay ahead of antibiotic resistance only if we find drugs with new scaffolds, or core chemical structures. One promising candidate, an antibiotic made by a bacterium than infects plants, caught his attention because it contai... Read More

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