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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

Oxidase Test

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

Catalse Test on S. aureus

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.
Read More

Carbon-Based (micro) Life

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

Breaking a bacterial-made magnet apart

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

Kocuria rosea colony variants

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

Organism mix on a hand print

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

Friend and foe

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

It's not about size.. It's about what you are

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 couple

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

Happy Halloween MAC Style

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 on tree trunk

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

Happy Halloween!

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

Serratia marcesens on Casein

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


Casein Plates contain the major milk protein found in milk. Pseudomonas aeruginosa grown on Casien agar for 72 hours at 37 degree's C to look for the presence of the exoenzyme proteases/caseases . Pseudomonas aeruginosa, casein hydrolysis, as noted by a zone of clearing around the organism, as... Read More

Swarming Proteus

Proteus on a CLED plate. How and why does it swarm? Read More

5% NaCl BHI Media Contminant

Fungal contaminant, probable airborne, seen on BHI media containing 5% NaCl after 2 months at refrigerated temperatures. White hyphal "apron" with no spore formation can be seen at the edges with brown spore formation seen in the center. Read More

Congo Red

The Congo red binding assay of small colony variats from Pseudomonas aeruginosa. Alín Tobares, PhD student. Dra. Andrea Smania´s lab at CIQUIBIC-UNC, Córdoba, Argentina. Read More

Princess's tears

Free seeding
pigmented dish
5 days
home laboratory Read More

Impulsive wave of ability

Pigmented Petri dish
free seeding
home laboratory
5 days Read More
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