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Microbes Swim to Hydrogen Gas

Scientists have long believed that microorganisms that produce methane swim toward the hydrogen gas they need to stay alive, but it has been too hard to prove in the lab.

Montana State University researchers have now overcome those challenges, allowing them to verify it for the first time, sa... Read More

The typhoid fever pathogen uses a cloaking mechanism to evade neutrophil neutralization

Typhoid fever is caused by systemic infection with Salmonella enterica Typhi. In contrast, infection with the closely related bacterium Salmonella enterica Thyphimurium is usually limited to the gut and causes less serious diarrheal disease. Research comparing the two pathogens reveals how S. Ty... Read More

The Epstein–Barr Virus Wears Chain Mail

The Epstein–Barr virus and its relatives in the herpesvirus family are known for their longevity. They persist in host tissues for years, causing diseases like mononucleosis, Kaposi's sarcoma and herpes, and are notoriously difficult to kill. University of California, Los Angeles, biophysicist Z... Read More

Bioinspired coating for medical devices repels blood and bacteria

From joint replacements to cardiac implants and dialysis machines, medical devices enhance or save lives on a daily basis. However, any device implanted in the body or in contact with flowing blood faces two critical challenges that can threaten the life of the patient the device is meant to hel... Read More

Osmotic pressure

A) Bacillus subtilis, (B) Staphlococcus aureus and (C) Escherichia coli were grown on BHI media with varying concentrations of NaCl (0.85%, 5%, 7.5%, 10%, and 20%) at 37 degrees C for 24 hrs. Read More

Infectious diseases: Smallpox watch

In 2011, while construction workers were digging a foundation at a site in Queens, New York, their equipment struck against something metal. Then a body rolled out of the rubble. Thinking that they might have unearthed the shallow grave of a murder victim, the workers immediately called the New ... Read More

Vinegar kills tuberculosis and other mycobacteria (press release)

The active ingredient in vinegar, acetic acid, can effectively kill mycobacteria, even highly drug-resistant Mycobacterium tuberculosis, an international team of researchers from Venezuela, France, and the US reports in mBio®, the online open-access journal of the American Society for Microbiolo... Read More

Paper device spots antibiotic-resistant bacteria

Scientists in Canada have developed a paper-based device that checks if bacteria are resistant to certain antibiotics. The simple system could help users in remote areas pick the most appropriate treatment for bacterial infections.

Click on 'source' to read more Read More

Central Park Features Worldwide Soil Microbes

"If you want to find unique diversity and if you want to find a wide range of different below-ground organisms, you don't have to travel around the world. You can walk across Central Park."

That statement comes from Noah Fierer, an ecology and evolutionary biology professor at the University ... Read More

Pictures Considered #10. The Origin of Pulsed-Field Gel Electrophoresis

In May 1984, readers of an article by Schwartz and Cantor in the prestigious journal Cell were to stumble upon pictures of DNA agarose gels that were among the lousiest of such ever published after the method was introduced in the early 70s. Why did the editors of Cell risk their reputation? Or ... Read More

New genomics technique could improve treatment and control of malaria

Single-cell genomics could provide new insight into the biology of malaria parasites (including their virulence and levels of drug resistance) to ultimately improve treatment and control of the disease, according to new research funded by the Wellcome Trust and the National Institutes of Health.... Read More

Ancient whodunit may be solved: The microbes did it!

Methane-producing microbes may be responsible for the largest mass extinction in Earth’s history.

Evidence left at the crime scene is abundant and global: Fossil remains show that sometime around 252 million years ago, about 90 percent of all species on Earth were suddenly wiped out — by far ... Read More

Harvard scientists control cells following transplantation, from the inside out

Harvard stem cells scientists at Brigham and Women’s Hospital and MIT can now engineer cells that are more easily controlled following transplantation, potentially making cell therapies, hundreds of which are currently in clinical trials across the United States, more functional and efficient.
... Read More

ASM GM 2014 - Bacteria in Urine Could Cause Overactive Bladder

Contrary to popular belief, urine is not sterile and the bacteria in it may be associated with overactive bladder (OAB) in some women. Presenters will discuss their research ... Read More

Pictures Considered #17. The Meselson-Stahl Experiment

Described as the “Most Beautiful Experiment In Biology” the demonstration by Meselson and Stahl that DNA replicates semiconservatively is one of the major landmarks in the genesis of modern biology. And indeed it is most pleasing, both visually and cerebrally.

By semiconservative is meant tha... Read More

Terms of Biology: The Pan-Genome

A still somewhat unfamiliar term is floating around: the pan-genome. In 2005, Tettelin et al. coined the term along with genome analyses of eight Streptococcus agalactiae strains, and Merry introduced it to this blog, some time back already. Today, a keyword search in PubMed returns roughly 200 ... Read More

Methane-Munching Microorganisms Meddle with Metals

On the continental margins, where the seafloor drops hundreds of meters below the water’s surface, low temperatures and high pressure lock methane inside ice crystals. Called methane hydrates, these crystals are a potential energy source, but they are also a potential source of global warming if... Read More

Oral Bacteria and Cancer

Over a number of years, epidemiological studies established several well-defined risk factors for cancer, including age, heredity, diet, tobacco use, chronic viral infections, and inflammation. Paradoxically, the success of these studies left little room for incorporation of any new factors or c... Read More

Study reveals how deadly MERS virus enters human cells

Cornell researchers have uncovered details of how the deadly Middle East respiratory syndrome coronavirus (MERS-CoV) enters host cells, findings that help explain how it can infect many cell types – a hallmark of viral pathogenicity. The results also offer possible new avenues for treatment.

... Read More

Innocence by Viral Tagging - Finalist in Ocean 180 Video Challenge

Viruses are the most abundant biological entities on the planet with approximately 1030 in the world’s oceans at any time. As such, they play a central role in global nutrient cycling. Despite their ecological importance, little is known about how viruses interact with their hosts due to the dif... Read More

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