MicrobeWorld

DNA preserved in calcified bacteria on the teeth of ancient human skeletons has shed light on the health consequences of the evolving diet and behaviour from the Stone Age to the modern day.

The ancient genetic record reveals the negative changes in oral bacteria brought about by the dietary ... Read More

Scientists have revealed how a bacterial enzyme has evolved an energy-efficient method to move long distances along DNA. The findings, published in Science, present further insight into the coupling of chemical and mechanical energy by a class of enzymes called helicases, a widely-distributed gr... Read More

Face masks help prevent people from getting the flu. But how much protection do they provide?

You might think the answer to this question would be well established. It’s not.

In fact, there is considerable uncertainty over how well face masks guard against influenza when people use them ou... Read More

Here is a transcript of TWiM episode #49, "Grape-like clusters". Thanks to Frank Shinneman for transcription.

The transcript is also available as a pdf file - click... Read More

Hosts: Vincent Racaniello, Roberto Cattaneo, ... Read More

Scientists have long believed that measuring the amount of HIV in a person’s blood is an indicator of whether the virus is actively reproducing.

A University of Delaware-led research team reports new evidence that hidden virus replication may be occurring within the body’s tissue, despite un... Read More

Plants associated bacteria play a key role in host productivity and health. These bacteria are phylogenetically diverse and form interactions considered neutral, beneficial or detrimental. A better understanding of these interactions will have a direct impact in agriculture by promoting sustaina... Read More

Gram stained slide from oil enrichment culture, samples enriched from soil. I would love to know what the HUGE bacilli are - can anyone help? Read More

Radioactive iron may be first fossil imprint of a nearby cosmic explosion. Sediment in a deep-sea core may hold radioactive iron spewed by a distant supernova 2.2 million years ago and preserved in the fossilized remains of iron-loving bacteria. If confirmed, the iron traces would be the first b... Read More

Few people check into a hospital expecting to come down with a severe case of diarrhea while undergoing care for an entirely unrelated problem. And even fewer expect to die of the hospital-acquired intestinal infection that causes the watery stools. Yet for approximately 14,000 Americans each ye... Read More

Sandia National Laboratories is developing a suite of complementary technologies to help the emerging algae industry detect and quickly recover from algal pond crashes, an obstacle to large-scale algae cultivation for future biofuels. The research, which focuses on monitoring and diagnosing alga... Read More

The emergence of human infections with avian influenza viruses (H7N9 and H5N1) have raised concerns about the virus gaining the ability to spread person-to-person, potentially causing a deadly pandemic. So far the number of human cases has been limited but the mortality rates have been high. In ... Read More

A newly discovered rodent virus that resembles hepatitis C could give research chimps a break.

The US National Institutes of Health (NIH) is expected to make a decision imminently on how many of its 360 research chimps should be retired on the grounds that most studies can be done in other an... Read More

Researchers from the University of Tübingen have been able to show for the first time how microorganisms contributed to the formation of the world's biggest iron ore deposits. The biggest known deposits -- in South Africa and Australia -- are geological formations billions of years old. They are... Read More

In the mid-19th century, if you had wanted to have a scientific fight, you could have picked no better subject than palaeontology. Fossils pouring out of the mines, quarries and railway cuttings of the industrial revolution were undermining the biblical accounts of creation and early history, th... Read More

The proportion of young women diagnosed with genital warts in Australia has seen a significant decline thanks to the HPV vaccine, suggests a new paper. In 2007, Australia became one of the first countries to implement a nationally funded quadrivalent human papillomarivus (HPV) vaccination progra... Read More

One of the big mysteries of AIDS is why some HIV-positive people take more than a decade to progress to full-blown AIDS, if they progress at all. A group of investigators from the Multi-Center AIDS Cohort Study (MACS), housed within the UCLA AIDS Institute, may have uncovered the key to this var... 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

Following up on our coverage of the work of John Rogers, who is leading efforts at University of Illinois to develop flexible and bioresorbable electronic systems, there’s news now of new findings evaluating such implants in animal models.

Presented at the 245th National Meeting & Exposition ... Read More

For what may be the first time, researchers have discovered a virus inside a host with a non-standard nuclear genetic code — one that differs from the standard genetic code that almost all living things use to produce proteins.


“The finding is significant because it shows that these viruses... Read More