Colonies are initially black and yeast-like, becoming suede-like, olivaceous grey and mould-like with age. This photo show the morphology of colony after a week.
Credits: F. d'Aleo - B. Rogolino - A. Barbaro
Ospedale Bianchi Melacrino Morelli - Unità di Microbiologia Read More
From Moselio Shaechter of ASM's Small Things Considered:
"A recent review article deals with the fascinating phenomenon of pathogens exiting from their host cell. Sometimes, one pathogen helps another one in transmission to the next host. In one case, a Candida albicans hypha caught in the ac... Read More
The Baird Parker Agar is great to isolated Staphylococcus aureus, the colonies turn a deep black color that create an amazing contrast with the yellow of the medium. Read More
Fungal contaminant seen on Starch agar after 1 month at refrigerated temperatures. Colonies were blackish green and circular. Elevated tufts could be seen in the middle of each colony with small water droplets in the rhizoid growth. Read More
Isolated colonies of salmonella enterica subsp. Typhi
Image was taken in 2005 for master thesis.
Location: Kathmandu Model Hospital. Read More
The picture was taken for my master thesis in 2005.
Location: Kathmandu Model Hospital, Nepal. Read More
Kluyvera is a relatively newly described genus in the family Enterobacteriaceae that infrequently causes infections in humans. The organism has been isolated from various clinical specimens but its has been regarded alternatively as saprophytic, opportunistic, or pathogenic. In our case Kluyvera... Read More
Enterococcus faecalis grown on blood agar for 48 hrs at 37 degree's C. Small, pin point, circular colonies can be seen with gamma hemolysis (no hemolysis of the blood agar). Colonies were white with a glossy translucent appearance. Read More
Exposed for 3 minutes outdoors in the gymnasium of the Inter American University of Puerto Rico. Medium used for fungi PDA. Culture medium used for bacteria TSA. Incubated at 37 degrees for 48 hours. Read More
Klebsiella pneumoniae grown on Mac for 48 hrs at 37 degree's C. Pink, indicating lactose fermentation, mucoid colonies are seen. Read More
A dimorphic fungi Exophiala dermatitidis was grown on Saburaud Choramphenicol agar for 3 weeks. After this a sterile polilysine coated coverslip was applied on colony to collect fungal elements. Coverslip was fixed in glutaraldehyde, dried and observed using Hitachi Scanning Electron Microscope.... Read More
MacConkey agar plate with invasive lactose fermenting E.coli which was isolated for fatal case of neonatal septicemia.
Photo was taken after 12h incubation under 37C.
Credits: Povilas Kavaliauskas, Vilnius University, Lithuania. Read More
Fungal contaminant on TSA grown at refrigerated temperatures for 1 month. Colonies appeared rhizoid throughout with a fluffy appearance. Read More
Different view of TSA plate with fungal contaminant, presumably from the air, after 1 month at refrigerated temperatures. White center spore formation can be seen with white hypae on the edges. Spore formation can be see forming towards the edges. Read More
Unknown fungal contaminant on TSA after growth at refrigerated temperatures for 1 month. White hypae can be seen at the edges with green spore formation starting in the center. Read More
Klebsiella pneumoniae grown on blood agar for 48 hrs at 37 degree's C. Read More
Serratia marcescens can form brilliant red colonies on LB agar due to the synthesis of the secondary metabolite prodigiosin. In the Microbiology teaching lab, we had students create pigment mutants of S. marcescens and these lovely shades of pink and white were collected for analysis. Read More
These are two harmless lab strains of E. coli. One can ferment the sugar lactose into acidic byproducts and the other cannot. MacConkey media contains an indicator dye that turns from red to yellow when the pH is raised. The four pink streaks were drawn with a culture of the lactose fermenter (t... Read More