This is a Tease Prep stain of the Fungal Rhizopus with Lactophenol Blue. It is seen under a microscopy at total magnification of 1000x. As shown there are pseudohyphae with conidia formed around the cells. It was the first tease prep stain that clearly shows the artistry of the fungal structure.... Read More
Salmonella is a zoonotic foodborne pathogen and a public health concern. It has been estimated that this pathogen causes ~1.2 million illnesses, ~20,000 hospitalizations, and ~400 deaths in the US annually (Scallan et al., 2011). Salmonella has ~2,600 serotypes (serovars) and numerous hosts and ... Read More
The slide was prepared from blood of infected animals (cattle). The smear was stained with poly-chrome methylene blue which demonstrated blue colored bacillary body and light pink colored capsule (McFadyean's reaction).
The animal had the symptoms of high fever, convulsion and sudden death. ... Read More
Shiga toxin producing Escherichia coli grown on blood agar. The organism was isolated from smallholdings' cattle, Bangladesh. Read More
Shiga toxin producing Escherichia coli grown on EMB agar. The organism was isolated from smallholdings' cattle, Bangladesh. Read More
Picture carefully taken with my iphone under a dissecting microscope. Read More
This fungal colony, in association with a few others, was grown on SDA and appears to be an antibiotic producer. The compounds that it's producing appear orange and red. The colony grew and began producing compounds on the agar after five days incubation at 30 degree Celsius. This plate is part ... Read More
Cryptosporidium (Crypto) is a parasite that causes diarrheal disease. Crypto can live in the intestine of humans and animals and is passed in the stool of an infected person or animal. This parasite is very resistant to chlorine-based disinfectants and is protected by an outer shell that allows ... Read More
I am Bibha Dahal, Graduate Teaching Assistant from South dakota State University, Brookings, SD. I have attached the image of nitrogen fixing bacteria, with water drop like appearance, grown on Nitrogen Free Medium, incubated at 28 degree Celsius for 4 days at microaerophilic condition.
Thank ... Read More
Unidentified soil microbes on SDA plates; most colonies are producing compounds (droplets can be seen on top of the colonies; possibly antibiotic producers). This picture was taken by me, Kaitlynn Fenley. The plate is from the class that I am a teaching assistant for at Louisiana State Universit... Read More
Close up image of the edge of an unknown fungal contaminant showing concentric rings of black spore formation (center of colony) and nonspore forming white hypae on the outer edge of the colony. Fungal contaminant was found on TSA after a month of refrigerated temperatures, presumably an air bo... Read More
Paenibacillus species have been isolated from a wide variety of sources including soil, water, the plant rhizosphere, plant materials, food, fodder, faeces and diseased insect larvae. They are facultative anaerobes or strict aerobes and mostly motile, endospore forming rods. This is the first ti... Read More
Pure culture of Pseudomonas sp. isolated from rain collected at Virginia Tech, USA.
Incubation Conditions: 48 hours at 28°C + 24h at 20°C on EMB Agar
It can be distinguished two types of colonies following a gradient of culture density.
In this short blog post, I "write" on Petri dishes with bioluminescent bacteria to create words and poems in "living light." I also write a haiku to quorum sensing in the same style! Read More
Strain: Pseudomonas aeruginosa PA14
Medium: M8 minimal medium agar plates
Incubation Conditions: 48 hours at 37°C
Pseudomonas aeruginosa is a gram-negative, rod-shaped and monoflagellated bacterium that has an incredible nutritional versatility. Swarming motility, a flagellum-dependent behavi... Read More
Pictured here are blue colonies of Methicillin-resistant Staphylococcus aureus (MRSA) growing on Remel Spectra MRSA medium. Spectra media contains a chromogen that yields a blue color as a result of phosphatase activity. The phosphatase enzyme is present in many staphylococci, including Staphylo... Read More
Photograph of 400X magnified image of biogas digestor sample. A strange spiraled type microbe seen (probably like left handed DNA helix). The microbe is shown with an arrow. Has anyone seen such microbial structure? Read More
Streptococcus pneumoniae cells are Gram-positive, lancet-shaped cocci. Usually, they are seen as pairs of cocci, but they may also occur singly and in short chains. In this photo a mucoid strain on blood agar showing alpha hemolysis (green zone surrounding colonies). Note the zone of inhibition ... Read More