A sample of Proteus mirabilis was inoculated on to a blood agar plate by taking a sterile swab and placing a drop in the center of the plate. The plate was then incubated at 37 degrees for 8 hrs. Swarming motility can be seen as a halo around the growth in the center of the plate. Read More
In this post from my research and teaching blog, Microbes Rule, I show off some Hallowe'en inspired microbiological goodness! Enjoy! Read More
The spooky, crimson plate in the center was drawn using Staphylococcus aureus to write Happy Halloween and draw the ghost. The eyes and mouth of the ghost were drawn with Staphylococcus epidermidis. Since S. aureus ferments the sugar mannitol in the MSA plate, the red dissipated and a yellowis... Read More
Meet the Microbe Mafia: K. rhizophila, E. coli, and C. xerosis. They might seem like friendly bacteria but are always looking for opportunities to cause disease. Well ..... K. rhiz is really not that bad but peer pressure works in bacterial populations as well. When armed with C. violaceum th... Read More
“We Are Very Much Thankful to:
Prof. Vincent Racaneillo (USA) - Columbia University
A. Prof. Andrew Marsh (UK) - University of Warwick
A. Prof. Gulfaraz Khan (UAE) - United Arab Emirates University
Dr. Ryan McNamara (USA) – University of Chapel Hill, NC
Dr. Sharon Kuss (USA) - UT Southweste... Read More
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). Image ... Read More
The oxidase test is performed using a reducing agent to detect bacteria’s ability to produce cytochrome c oxidase, an enzyme in the electron transport chain. The reducing agent (N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD)) changes or produces a purple color as it become oxidized. Pseudom... Read More
Organisms that have the catalase enzyme can detoxify the cell of hydrogen peroxide by converting it to oxygen gas. Bubbles indicate oxygen gas production after the addition of hydrogen peroxide directly to colonies growing on the TSA plate.
The bonded carbons are shown using E. coli, E. faecalis, and C. violaceum. Using BBL's CHROMagar, we were able to show the pi bonds in pink (E. coli) and blue (E. faecalis). Read More
Currently, it is well established that prokaryotes possess cytoskeleton and organelles. This image depicts how magnetic organelles, magnetosomes, are properly partitioned and segregated by a mechanism that relies on the treadmilling of a dedicated cytoskeletal structure, the actin-like MamK fila... Read More
This photo was taken through a dissecting scope. Normally our Kocuria rosea display a smooth colony surface. One semester, they displayed a wrinkled surface. Last fall I observed a plate with both. October 2, 2015 Read More
Mix of organism seen on a handprint/finger on TSA after incubation at 37 degrees for 24 hrs then held at refrigerated temperatures for 1 month. Read More
Staphylococcus aureus is a human commensal frequently found in skin, nose, throat and female reproductive tract. About 20% of healthy human population are persistent carriers of S. aureus. On the other hand, they can cause a range of infections, from minor skin infections to life-threatening blo... Read More
A Nutrient agar plate exposed to air for few minuts shows the truth of world well. after a overnight incubation at room temparature. A small but significant fungus colony prevents growth of large fungus colony.
Same thing happens in our world mannier times when small people (so c... Read More
Happy bacteria couple drawn on TSA plate using a MRSA culture.
This picture illustrates how happy bacteria can become when people don't take all the antibiotic treatment correctly. Antibiotic resistance is a big problem nowadays. Read More
E. Coli grown on MacConkey Agar at 37 degrees for 24 hours in the shape of a jack-o-lantern face.
-Important Ingredients: crystal violet, bile salts, neutral red (color indicator), lactose
-Differential: used to identify and isolate lactose fermenting G- enteric bacteria mainly Enterobacteriac... Read More
Lichen, a consortium of cyanobacteria and fungus in a symbiotic relationship, is commonly found on damp concrete surfaces where the moisture made an otherwise inhabitable niche into a habitable one. Moisture together with photosynthetic cyanobacteria enable the churning out of complex organic mo... Read More