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.
In this post from my Microbiology/Education blog, I wish everyone a lovely day of food, fellowship, and fireworks. My laboratory brings you our own "fireworks" through bioluminescence! Read More
Acid Fast stain done on a mix of Staphylococcus aureus and Mycobacterium smegmatis. The stain was done on a culture of M. smegmatis that was incubated on a TSA slant with 1ml TSB added at 37 degree's C for 4 days, S. aureus was incubated in TSB at 37 degree's C for 24 hrs. Several loops of eac... Read More
Image taken in Jamestown in March, similar to previous post. Several people in our dept have suggested chechen of the forest or SIlvershelf. Read More
A sample of Proteus mirabilis was inoculated on to a TSA 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 clear halo and finger like projections coming from and around the grow... Read More
Streptomycetes are a member actinomycete family. Streptomycetes are usually found in soil and are important decomposers. They are aerobic, gram-positive, filamentous rods that create branching hyphae. They also produce more than half of the world's antibiotics, and are therefore very valuable in... Read More
Just when we think we know everything, a story comes along to remind us that there is something fundamental--and seemingly elementary--that we still haven't figured out. “Why are we the size we are? Why are our organs the size they are? Why are the cells in those organs a stereotypical size? Wha... Read More
This is a good news story all around. UC Berkeley engineers, Michael D'Amrosio and Matthew Bakalar (UC Berkeley Bioengineering) with medical personal from NIAID, Dr. Thomas Nutaman and his collaborators from Cameroon and France collectively took the omni-present global resource, a standard smar... Read More
Shown here is a picture of a hookworm egg found on a concentrate in an ova & parasite exam
Human hookworms include the nematode species, Ancylostoma duodenale and Necator americanus. These species have indistinguishable eggs and can only be distinguished by their larvae.
Infective larvae g... Read More
Tannery tanning fluid sample stained with Live/Dead BacLight under UV light. Either 40x or 100x oil immersion. Green bacteria indicate living cells, while Orange bacteria indicate dead cells. Some of the green cells were moving around even after staining! Read More
I have taken this microphotograph of macroconidia of Alternaria alternata.
Department of microbiology
SKIMS Soura Srinagar India Read More
In memory of Eugéne Penard (1855-1954) we have created a website to show the variety and beauty of amoeboid organisms in light- and electron-microscopic images. Read More
A little MRSA snowflake to get you in the holiday spirit. Oxacillin/Methicillin resistant Staph aureus streaked out on Spectra agar - incubated at 35C O2 for 24hrs. Follow me on instagram @stylish_streaking for more fun cultures and other images showing the beautiful side of infectious diseases!... 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
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
Microphotograph showing scolex and hooklets of Echinococcus granulosus. Read More
An isolate of Staphylococcus aureus (Methicillin sensitive) on blood agar plate. Submitted for approval to be posted as "Picture of the day".
Author: Dr Luqman Satti. Consultant Medical Microbiologist. Combined Military Hospital. Quetta. Pakistan Read More
A former student dropped by my lab this morning, and brought me a gift: a knit bacteriophage! Many times, as educators, we hear what we haven't done well, or could do better. Sometimes, like today, we get a priceless "thank you" from a former student. Read More
Pictured is a culture of Mycobacterium tuberculosis growing colonies in the distinctive "serpentine cord" form seen in many strains of M. tuberculosis. These cords are made up of chains of cells that make chains due to a cell wall factor of MTB.
The cell wall structure of Mycobacterium is a m... Read More
Bacillus cereus, a food-borne pathogen, is capable to form biofilms. Biofilms are microbial communities that are controlled by a biological mechanism called quorum sensing. In this image, the B. cereus biofilm was viewed under microscope using LPO and grown in microtiter plate well for 48 hrs of... Read More