We continue our series of images that have made a difference in microbiology. This one, published by John Cairns in 1963 has earned a most deserved place in textbooks and reviews. It shows a radioautograph of an intact E. coli chromosome in the act of replicating. From this image, Cairns conclud... Read More
Some wild clones of social amoebas farm the bacteria they eat, but this is a losing strategy if nonfarming amoebas can steal the farmers’ crops. To make the strategy work, the farmers also carry bacteria that secrete chemicals that poison free riders. The work suggest farming is complex evolutio... Read More
Pictured here is Rhodotorula, a beautiful coral-colored yeast grown on Sabouraud's Dextrose Agar.
Rhodotorula species are common environmental contaminants, found naturally in air, water, soil, and other areas. This yeast rarely is a pathogen, though it can cause infections in immumocompromis... Read More
This study done at department of Clinical Microbiology, TU Teaching Hospital , Kathamandu, Nepal.
Clinical specimen: Sputum
Media: Muller Hinton Agar
Incubation condition: at 37'c for 24hrs.
Isolate: Pseudomonas aerugionsa
Pic: Symbol of ASM.
Pseudomonas aeruginosa is a Gram-negative rod... Read More
Female ascaris release unfertilized eggs which are elongated in shape. Eggs are always bile stained. Children are more susceptible towards ascaris infestation. It is one of the major public health problem in developing countries. Read More
A group of fungi growing on the surface of stagnant black tea left open to the environment. I've found this leads to beautiful morphologies when I try it. Read More
Unknown fungal isolated contaminant found on MAC. MAC plate was incubated for 2 months at 4 degrees C once fungal growth was seen. This colony seemed to emerge from the agar and had a 3D appearance. The center of the colony had what seemed to be hyphal growth while the edges had a hard waxy un... Read More
Sputum specimen from sick of fibrosis cystic can hold many microbes and yeast. This specimen sent to our laboratory Mycobacteriology of Polyclinic University of Messina for mycobacteria research, shows yeast cells with Ziehl-Neelsen stain. 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
This picture was taken in early October 2014 in the Washington, DC metro area. The temperature that week had been in the mid-70's during the day to the low 60's at night (Fahrenheit), and it hadn't been too humid. This had grown at the base of a tree, and was very large -- my hand is in there fo... Read More
Petri dish Party... between green and brown Pseudomonas aeruginosa, Micrococcus sp., Staphylococcus aureus and Serratia marcescens Read More
Mapping deletion mutations by genetic tools is one thing, seeing them displayed along the length of a DNA molecule is quite another. But how can one see what isn’t there? In 1968, Ronald Davis and Norman Davidson did just that—visualizing deletion mutations in the genome of coliphage l. They rea... Read More
A positive D test indicates that the presence of macrolide-inducible resistance to clindamycin produced by an inducible methylase enzyme that alters the common ribosomal binding site for macrolides, clindamycin and the group B streptogrammins (quinupristin). This cross-resistance, called the ML... Read More
15 days old culture of chalky actinomycetes on Starch Casein Agar. Isolated from soil of soil of ground of Central Department of Microbiology, Trubhuvan University, Nepal.
Incubation temperation: 30 degree celsius. Isolated for testing potential for antibiotic production.
Sabita Ghimire, s... Read More
A chemist at Washington University in St. Louis is studying siderophores, iron chelating molecules released by bacteria during an infection, with the thought of using them to design personalized antibiotic therapy that would avoid the rapid evolution of resistance that plagues antibiotic drug di... Read More
Hilary Koprowski flanked by Vincent Racaniello and Richard Kessin on the occasion of Dr. Koprowski's 'History of Science' lecture at Columbia University College of Physicians & Surgeons, April 2005. Read More