Scientists have engineered yeast cells that can “talk” to one another using a versatile plant hormone called auxin.
Typically, these simple fungal cells (Saccharomyces cerevisiae) usually do their jobs—making bread rise or converting sugar into alcohol—without having to communicate or work to... Read More
Blastomyces dermatitidis. Yeast from tissue smear. Gomori methenamine silver nitrate stain. (400x) Read More
In this post from my microbiology/education blog, I discuss a post on Boing Boing recently that used a video I had made of ice nucleation bacteria. Ice nucleation bacteria are very interesting of course, and I link to the Boing Boing post. In addition, I provide an additional video of students... Read More
The foreground shows the density map (gold) from a cryoelectron micrographic reconstruction of malabaricus grouper nervous necrosis virus, a fish nodavirus. The background shows the fitting of a two-domain model consisting of a protruding domain and a β-sandwich domain into the reconstruction de... Read More
Sonderia sp. (a ciliate that preys upon various algae, diatoms, and cyanobacteria)
2012 Nikon Small World Photomirography Competition Dr. Diana Lipscomb, George Washington University, Department of Biological Sciences, Washington, District of Columbia, USA Read More
A deadly parasite that causes Chagas disease is widespread in a common Texas insect, according to a new study by University of Texas at El Paso (UTEP) researchers. The finding suggests that the risk of Texans contracting the disease may be higher than previously thought. Read More
Pseudomonas aeruginosa isolated from sputum into department of Microbiology - Riuniti Hospital Reggio Calabria .
This strain of Pseudomonas secretes brown/black extracellular pigment: pyomelanin.
Photo from D'Aleo Francesco archive. Read More
Tired of the portraits, landscapes and abstract art that peppers the walls of most art museums? According to Dutch photographer Wim von Egmond, there’s one art subject that has been ignored for centuries and finally deserves its due: microscopic organisms.
15 days old culture of chalky actinomycetes on Starch Casein Agar. Isolated from soil of soil of ground of Central Department of Microbiology, Trubhuvan University, Nepal.
Incubation temperation: 30 degree celsius. Isolated for testing potential for antibiotic production.
Sabita Ghimire, s... Read More
Previously, biologists at Emory University and the University of Michigan discovered that butterflies use plant toxins as a drug to cure their offspring of parasitic infections. Now they've dug a little deeper and found that the fungi associated with the roots of milkweed plants change both the ... Read More
Slime production by Staphylococcus epidermidis on Congo Red agar; demonstrated by black colored colonies. Slime production is one of the most important virulence factors produced by Coagulase negative Staphylococci.
The colonies of slime non-producing strains remain pink to red.
Compared with routine medical care, probiotics administered to critically ill patients in intensive care units showed no benefit in preventing the colonization of drug-resistant microbes in the intestinal tract, according to new research at Washington University School of Medicine in St. Louis. Read More
Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing micro-colonies (spherules) characteristics of broth-grown Mycoplasma pneumoniae Read More
Swarm of paramecia surrounding an unidentified protozoan. From the Wistreich Collection. Read More
Colorized transmission electron micrograph showing H1N1 influenza virus particles. Surface proteins on the virus particles are shown in black. Credit: National Institutes of Health/Department of Health and Human Services (NIAID). Read More
Unknown yeast isolated on TSA from a swab taken from the bottom of a shoe incubated at 25 degrees C. Yellow, mucoid, round colonies were seen after 2 weeks. This isolate grew equally well at 37 degree C with a growth time of ~ 1 week. Read More
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
2009 Nikon Small World Competition award 10th place: Leave it to the diminutive diatoms to bring out algae's best side. Only 10 times larger than life, this image was captured via dark-field by Arlene Wechezak in Anacortes, Wash. Such diatoms have been proposed as a key biofuel source of the fut... Read More