Fungal like contaminant, presumably air borne, on BEA media after 1 month in the refrigerator. Mucoid mounding beige center with a hairlike circular border. Read More
Imprint of a tennis shoe done on a large TSA plate, grown for 24 hrs at 37 degrees C, held at room temp for 48 hrs then stored in the refrigerator. Interesting mix of a variety of bacteria (Bacillus spp) and possible yeast. Read More
Seveal fungal contaminants seen on Bile Esculin agar (BEA) after several montha at refrigerated temperature. The BEA agar did turn black indicating esculin hydrolysis. Read More
Please submit your best bacterial masterpiece to the American Society for Microbiology's annual Agar Art contest!
Shown here is Vibrio fischeri grown on extra salty LB that was stategically dyed purple with Crystal Violet and accentuated with colored markers. Read More
Swab taken of the wooden handrail outside the classroom. Incubated on TSA for 24 hrs, room temp for 48hrs the held at refrigerated temperatures. Beige colony was mucoid in the center with some rhizoid features, mat and spreading around the outside, possible Bacillus spp or yeast. Read More
Casein Plates contain the major milk protein found in milk. Serratia marcesens was grown on Casien agar for 72 hours at 37 degree's C to look for the presence of the exoenzyme proteases/caseases . Serratia marcesens exhibits casein hydrolysis as well as red colony pigment prodigiosin. 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
Imprint of a tennis shoe done on a large TSA plate, grown for 24 hrs at 37 degrees C, held at room temp for 48 hrs then stored in the refrigerator. Colony (possible Bacillus spp or yeast) was mucoid with rhizoid raised growth, lobate edges. Image taken using transmitted light. Read More
Staphylococcus aureus grown on Mannitol salt agar (MSA) for 24 hrs at 27 degree's C in the shape of a jack-o-latern smile.
MSA is a selective and differential agar used to differentiate between pathogenic S. aureus and S. epidermidis
•Important Ingredients: Phenol red, mannitol (sugar), 7.5% N... Read More
Imprint of a tennis shoe done on a large TSA plate, grown for 24 hrs at 37 degrees C, held at room temp for 48 hrs then stored in the refrigerator. Colony (possible Bacillus spp or yeast) was mucoid with rhizoid raised growth, lobate edges. 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
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
This was a swab taken form the bottom of a shoe incubated for 48 hrs at 37 degrees C then held at room temp for 48 hrs then held at refrigerated temp's. A variety of colony morphology is seen, rhizoid, mucoid, etc. Image taken using transmitted light. 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
In this post from my microbiology/education blog, I describe another "artistic" approach to learning introductory biology. Two fine #SciArt communicators, "The Amoeba Sisters," offered to judge some of the artwork my first year biology students created. Read More