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Pithovirus: Bigger than Pandoravirus with a smaller genome

A new virus called Pithovirus sibericum has been isolated from 30,000 year old Siberian permafrost. It is the oldest DNA virus of eukaryotes ever isolated, showing that viruses can retain infectivity in nature for very long periods of time. Read More

Gut Reaction: Human Colon Replica Demonstrates How E. coli Contaminates Groundwater

Scientists are great at growing E. coli in the lab. They know exactly under which conditions various strains thrive. Unfortunately, there is only so much that can be learned from the bacteria’s behavior in an ideal, isolated and ultimately unrealistic environment. That is why a group of research... Read More

Ice-cold methods decode bacterial infection systems

When attacking body cells, bacteria, such as salmonellae or Yersinia (plague pathogens), inject specific bacterial proteins through hollow, syringe-like structures – called injectisomes – into the host cells. These substances reprogram the cells and can thus overcome their defense. From then on,... Read More

Paramecium, showing contractile vacuole and ciliary motion (video)

Olympus BioScapes 2013 10th place Winner, Mr. Ralph Grimm. Paramecium, showing contractile vacuole and ciliary motion.

Click "source" to view. Read More

Bacteria from lean mice prevent obesity in peers

But microbes are only part of the story — the effect also depends on a healthy diet. Gut bacteria from lean mice can invade the guts of obesity-prone cage-mates and help their new hosts to fight weight gain.

Researchers led by Jeffrey Gordon, a biologist at Washington University in St. Louis... Read More

Gold Nanoparticles Help to Develop a New Method for Tracking Viruses

Researchers at the Nanoscience Center (NSC) of University of Jyväskylä in Finland have developed a novel method to study enterovirus structures and their functions. The method will help to obtain new information on trafficking of viruses in cells and tissues as well as on the mechanisms of virus... Read More

Fungus could control mosquitoes, research suggests

Researchers at Swansea University say a fungus could be the key to controlling mosquitoes.

Fungus Metarhizium anisopliae lives in soil and kills a whole range of insects and researchers say it also affects mosquito larvae if added to the water where the insect breeds.

The insects carry dis... Read More

Living liquid crystals: Bacteria-filled liquid crystals could improve biosensing

Plop living, swimming bacteria into a novel water-based, nontoxic liquid crystal and a new physics takes over. The dynamic interaction of the bacteria with the liquid crystal creates a novel form of soft matter: living liquid crystal.

The new type of active material, which holds promise for i... Read More

Joseph Leidy

JOSEPH LEIDY – 1823-1891

Joseph Leidy (1823-1891), naturalist, comparative anatomist, paleontologist, and microscopist, was dubbed by his biographer as “the last man who knew everything.” Leidy also made substantial contributions to the field of protozoology and is considered America’s first... Read More

Best Way to Kill Lab Animals Sought

Researchers are gathering this week to debate the most humane methods of dispatching lab animals, which are primarily rodents. Killing research animals is one of the most unpleasant tasks in science, and it is imperative to do it as humanely as possible. But researchers who study animal welfare... Read More

Unraveling bacterial behavior

Michael Laub studies the complex interactions that underlie cells’ responses to their environment. Bacteria encounter a constant barrage of ever-changing temperature, acidity and chemical stimuli from their environment. The cells must absorb all of this information and choose the correct respons... Read More

From Friend to Foe: How Benign Bacteria Evolve Into Virulent Pathogens

Bacteria can evolve rapidly to adapt to environmental change. When the "environment" is the immune response of an infected host, this evolution can turn harmless bacteria into life-threatening pathogens. A study published on December 12 in PLOS Pathogens provides insight into how this happens.
... Read More

Researchers develop a faster method to identify Salmonella strains

A method that promises to reduce by more than half the time it takes health officials to identify Salmonella strains has been developed by researchers in Penn State's College of Agricultural Sciences.

The finding is important because it promises to significantly speed up the response to many ... Read More

Mix Of Gut Microbes May Play Role In Crohn's Disease

More than a million Americans suffer from Crohn's, which seems to start when an overreactive immune system causes abdominal pain, diarrhea, bleeding, weight loss and other symptoms. Many patients have to take powerful steroids (which can have serious side effects), and some have parts of the dig... Read More

Researchers discover a new protein fold with a transport tunnel

The protein LIMP-2 is vital for both humans and animals. If it is absent – due, for example, to a hereditary disease – substances of an unknown nature, probably lipids, accumulate in the organism. Up to now, scientists were unsure what the protein looks like and how exactly it functions. Privatd... Read More

Changes in the Field Can Cut Food Contamination

Small shifts in agricultural practices can increase or reduce the risk of salmonella and listeria contamination on produce, new research shows.

For example, applying manure within a year of harvesting produce boosts the odds of contaminating a field with salmonella, which is the biggest singl... Read More

Bacterial Cytological Profiling Global Video Challenge

Bacteria have evolved resistance to every known class of antibiotic, creating an urgent need for methods to identify new antibiotics that work by different mechanisms. We have developed a new approach to antibiotic discovery that provides a short cut for identifying antibacterial molecules and ... Read More

Purple Bacteria on Earth Could Survive Alien Light

Purple bacteria contain pigments that allow them to use sunlight as their source of energy, hence their color. Small as they are, these microbes can teach us a lot about life on Earth, because they have been around longer than most other organisms on the planet. University of Miami (UM) physicis... Read More

Novel Gene Discovery Could Lead to New HIV Treatments

A team of researchers led by King's College London has for the first time identified a new gene which may have the ability to prevent HIV, the virus that causes AIDS, from spreading after it enters the body.

Published in Nature today, the study is the first to identify a role for the human MX... Read More

Mating is the kiss of death for certain female worms

The presence of male sperm and seminal fluid causes female worms to shrivel and die after giving birth, Princeton University researchers reported this week in the journal Science. The demise of the female appears to benefit the male worm by removing her from the mating pool for other males.

... Read More

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