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Mutant Bacteria That Keep on Growing

The typical Escherichia coli, the laboratory rat of microbiology, is a tiny 1-2 thousandths of a millimeter long. Now, by blocking cell division, two researchers at Concordia University in Montreal have grown E. coli that stretch three quarters of a millimeter. That's up to 750 times their norma... Read More

Malaria transmission linked to mosquitoes’ sexual biology

Sexual biology may be the key to uncovering why Anopheles mosquitoes are unique in their ability to transmit malaria to humans, according to researchers at Harvard T. H. Chan School of Public Health and University of Perugia, Italy. Through analysis of 16 Anopheles genomes, they found that these... Read More

A Pill That Mimics the Immune System

The human body doesn’t like outsiders. When a foreign pathogen or substance, say an unwanted virus, finds its way into our blood streams we produce antibodies that the neutralize the threat. These “Y”-shaped proteins are made by a class of white blood cells called plasma cells and bind to molecu... Read More

TWiV 329: Pox in the balance

Hosts: Vincent RacanielloDickson DespommierAlan Dove Read More

Bacillus anthracis showing McFadyean's reaction

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

Happy World TB Day!

Happy World TB Day! Happy because, today in 1882, notable Microbiologist Robert Koch announced his discovery of the culprit bacteria that causes tuberculosis. This photo is a Zeihl-Neelsen stain of bronchial lavage (1000x). The pink/red is the mycobacteria, and the blue/purple is background.
T... Read More

STOP SUPERBUGS BY TURNING UP THE HEAT

U. MINNESOTA (US) — One effective way to fight the spread of antibiotic-resistant bacteria, known as “superbugs,” may be to treat municipal wastewater solids at higher temperatures. Heating the solid waste to 130 degrees Fahrenheit (55 degrees Celsius) was particularly effective in eliminating ... Read More

New Drugs May Come from Microbes in Our Guts

Plants and Microorganisms are the major sources of drugs till date. Most of these "natural products" come from a few genera of soil and marine bacteria that have long been known for their prolific chemistry. The classical process of discovering drugs from microorganisms have two drawbacks- it is... Read More

Chlorine use in sewage treatment could promote antibiotic resistance

Chlorine, a disinfectant commonly used in most wastewater treatment plants, may be failing to completely eliminate pharmaceuticals from wastes. As a result, trace levels of these substances get discharged from the plants to the nation's waterways. And now, scientists are reporting preliminary st... Read More

A new understanding of Alzheimer’s

Although natural selection is often thought of as a force that determines the adaptation of replicating organisms to their environment, Harvard researchers have found that selection also occurs at the level of neurons, which are post-mitotic cells, and plays a critical role in the emergence of A... Read More

Why some HPV infections go away and others become cancer

For people infected with the human papilloma virus (HPV), the likelihood of clearing the infection and avoiding HPV-related cancer may depend less on the body's disease-fighting arsenal than has been generally assumed. Read More

Pollution is driving force behind growth of nuisance algal scums, study finds

Potentially toxic microbes which pose a threat to our drinking water have undergone a dramatic population explosion over the last 200 years as a result of pollution, research involving experts from The University of Nottingham has found. The study, published in the journal Ecology Letters, looke... Read More

Widely used food additives promotes colitis, obesity and metabolic syndrome, shows study of emulsifiers

Emulsifiers, which are added to most processed foods to aid texture and extend shelf life, can alter the gut microbiota composition and localization to induce intestinal inflammation that promotes the development of inflammatory bowel disease and metabolic syndrome, new research shows.

Click ... Read More

Streptococcus pyogenes Bacitracin Test

Growth Inhibition of Streptococcus pyogenes by Bacitracin. Streptococcus pyogenes is sensitive to bacitracin and will not grow around the antibiotic-containing disc. The other beta hemolytic streptococci are not sensitive to bacitracin. Isolated of Beatrice Rogolino M.Sc - photo Francesco d'Aleo... Read More

Americans Evacuated From Sierra Leone After Possible Ebola Contact

The first of a group of 10 American aid workers who may have come into contact with the Ebola virus in Sierra Leone were evacuated on Saturday, American government and aid officials said. They will be the largest group of Americans to have returned home over fears of exposure to the virus since ... Read More

Lab-on-paper developed for rapid, inexpensive medical diagnostics

A new paper-based platform has been created for conducting a wide range of complex medical diagnostics. The key development was the invention of fluid actuated valves embedded in the paper that allow for sequential manipulation of sample fluids and multiple reagents in a controlled manner to per... Read More

Your Immune System Is Made, Not Born

In one of the most comprehensive analyses of immune function performed to date, researchers analyzed blood samples from 105 sets of healthy twins. They measured immune cell populations and their chemical messengers—204 parameters in all—before and after participants received a flu shot. Differen... Read More

Blocking HIV infection with two soluble receptors

Because viruses must bind to cell surface molecules to initiate replication, the use of soluble receptors to block virus infection has long been an attractive therapeutic option. Soluble receptors have been developed that block infection with rhinoviruses and HIV-1, but these have not been licen... Read More

Bacteria in marine sponges harvest phosphorus for reef community

Significant accumulations of polyphosphate granules have been found in three common sponge species of the Caribbean coral reef, indicating that microorganisms that live on marine sponges are pulling phosphorus out of the water to feed themselves and survive in a deep-water environment where very... Read More

Too much of a good thing: Extra genes make bacteria lethal

We, as most animals, host many different beneficial bacteria. Being beneficial to the host often pays off for the bacteria, as success of the host determines the survival and spread of the microbe. But if bacteria grow too much they may become deadly. In a new study published in the latest editi... Read More
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