Xylose lysine deoxycholate agar (XLD agar) is a selective growth medium used for control in samples from water or food.
Salmonella and Shigela: red to pink colonies, some with black centers
Coliforms: yellow to orange colonies. Read More
Washington, DC – August 14, 2015 - Tungsten is exceptionally rare in biological systems. Thus, it came as a huge surprise to Michael Adams, PhD., and his collaborators when they discovered it in what appeared to be a novel enzyme in the hot spring-inhabiting bacterium, Caldicellulosiruptor besci... Read More
Last Fall, the great Dr. Margaret McFall-Ngai "virtually visited" my freshman writing class at the University of Puget Sound to discuss symbiosis and Microbial Supremacy with my new students. I had my students read some papers by Dr. McFall-Ngai (including the wonderful "Animals in a Microbial ... Read More
In a biological sense, last year’s Ebola epidemic, which struck West Africa, spilled over into the United States and Europe, and has to date led to more than 27,000 infections and more than 11,000 deaths, was a great surprise.
Local health and political leaders did not know of the presence o... Read More
Researchers at Washington University School of Medicine in St. Louis have received a $7 million grant from the Bill & Melinda Gates Foundation aimed at eliminating river blindness and elephantiasis, two neglected tropical diseases that annually sicken millions. Read More
A scientific peek into bacteria boudoirs is revealing how "sex" among disease-causing microbes can lead different species or strains to become resistant to antibiotic medications. Read More
This episode: Don't have immunity? Create your own! Scientists engineer cells to destroy their HIV infections using the bacterial immune system!
(14.5 MB, 15.8 minutes)
Host: Vincent Racaniello
Guest: Katherine A. High
Vincent speaks with Katherine High about her... Read More
This is a picture of a Gram stain of an anaerobic blood culture. This pleomorfic bacteria, were Gram negative filamentous bacilli with large round bodies. The identification by MALDI-TOF was Fusobacterium mortiferum. The patient has pancreatitis. I agree if you want to share this picture, since ... Read More
Toxoplasma gondii is estimated to chronically infect nearly one-third of the world's population, causing the condition Toxoplasmosis. It is most commonly associated with handling cat feaces and is a particular threat to pregnant women and immune-compromised individuals, such as HIV/AIDS patients... Read More
For thousands of years, people have used yeast to ferment wine, brew beer and leaven bread. Now researchers at Stanford have genetically engineered yeast to make painkilling medicines, a breakthrough that heralds a faster and potentially less expensive way to produce many different types of pla... Read More
BOC Sciences-Studies have found that peptides produced by a certain type of gut bacteria can be used to prevent type 1 diabetes from deteriorating and the lack of such gut bacteria along with the peptides may be the reason for type 1 diabetes in newborn babies.
The study was conducted by a co... Read More
A cartoon drawing of a phage particle (loosely based on the E. coli bacteriophage T4) drawn with a yeast contaminant on an LB agar plate, incubated at room temperature for several days. Read More
Since the chickenpox vaccine became available in the U.S. in 1995, there has been a large reduction in chickenpox cases. Hospitalizations and outpatient visits for chickenpox have continued their decline after a second dose of the vaccine was recommended to improve protection against the disease... Read More
Vaccinating one-year-olds against chickenpox could temporarily nearly double the incidence of shingles in the wider population, but in younger adults than previously thought. Read More
Did you know that the bright orange/pink colours on flamingos depended on the kind of food they ate?
Here, our white flamingo was created by 3 drops of different oils; olive oil, Tween 20 and Tween 80; in a little experiment to determine which would be the best oil for lipophilicity.
One d... Read More
Hi, I am Bibha Dahal, Graduate Research Assistant from South Dakota State University. This is a fungal colony that I grew in my lab on Malt Extract Agar for 3 days at 28°C that resembles an 'eye'. Read More
In midsummer 1986, five years after starting my poliovirus laboratory at Columbia University, I received a letter from Frederick L. Schaffer, a virologist at the University of California, Berkeley, asking if I would like to have his collection of poliovirus stocks. He was retiring and the sample... Read More