A second American aid worker in Liberia has tested positive for Ebola, according to the Christian humanitarian group she works for.
Nancy Writebol is employed by Serving in Mission, or SIM, in Liberia and was helping the joint SIM/Samaritan's Purse team that is treating Ebola patients in Monr... Read More
“She did pioneering work in genetics, but it was her husband who won a Nobel price.” So said an obituary in the British newspaper The Guardian regarding Esther Lederberg, a North American microbiologist married to Joshua Lederberg from 1946 to 1966 . Being married to and working along such a... Read More
The FDA has approved a new compound for the treatment of acute lymphoblastic leukemia (ALL) patients who are allergic to asparaginase derived from Escherichia coli.
The agency gave the okay to asparaginase Erwinia chrysanthemi (Erwinaze) as a replacement for E. coli-derived asparaginase or pe... Read More
We’re in a sad and weird place in biomedical science. In the 1940’s we got penicillin, in the following 30 years another 13 different classes of antibiotic were introduced. Since 1970 the number of new classes has dropped to a worrying 2. Since then we have found new ways to arrange the deckcha... Read More
Liquids are capable of forming a gas-liquid interface: maintenance of the surface requires adequate pressure in the gas. Adequate in this instance means a gas pressure greater than the vaporisation pressure in the liquid. The gas pressure... Read More
Tel Aviv University researchers have developed a computational model that explains how bacteria move in a swarm, which can be applied to man-made technologies, including computers, artificial intelligence, and robotics.
Ph.D. student Adi Shklarsh of TAU has discovered how bacteria collectivel... Read More
The genome of Medicago, a close relative of alfalfa and a long-established model for the study of legume biology, has been sequenced by an international team of scientists, capturing around 94 per cent of its genes.
The research gives new insights into the evolution of the Papilionoid subfami... Read More
Bacterial cells are fundamentally different to the cells of multicellular animals such as humans. They are far smaller, with less internal organisation and no nucleus (they have DNA but it is not packaged safely within a membrane). Because of this bacteria are almost exclusively single-celled or... Read More
New understanding of how bacteria build their protective cell wall solves persistent puzzler.
Using a series of chemical and genetic tricks to interrogate a dizzying cast of characters involved in the process of building a cell wall, researchers believe they have discovered the hidden identit... Read More
Although scientists have known for centuries that many bacteria produce hydrogen sulfide (H2S) it was thought to be simply a toxic by-product of cellular activity. Now, researchers at NYU School of Medicine have discovered H2S in fact plays a major role in protecting bacteria from the effects of... Read More
The microbes living in the guts of males and females react differently to diet, even when the diets are identical, according to a study by scientists from The University of Texas at Austin and six other institutions published this week in the journal Nature Communications. These results suggest ... Read More
The latest outbreak of Ebola virus in west Africa is the worst ever—as of Monday, it had infected more than 1,200 people and claimed at least 672 victims since this spring. Guinea, Liberia and Sierra Leone all have confirmed cases. An official at Doctors Without Borders has declared the outbreak... Read More
New research shows that the whip-like appendages on many types of cells are able to synchronise their movements solely through interactions with the fluid that surrounds them.
Many different types of cell, including sperm, bacteria and algae, propel themselves using whip-like appendages know... Read More
Whooping cough is a respiratory disease caused by Bordetella pertussis, which induces mucosal IgA antibodies that appear to be relevant in protection. Serum IgA responses are measured after pertussis infection and might provide an additional role in pertussis diagnostics. However, the possible i... Read More
Responding to experiments in the Netherlands and the United States in which scientists created a highly transmissible form of the potentially deadly H5N1 bird flu virus, the National Science Advisory Board for Biosecurity urged scientific journals not to publish details of the work out of fear t... Read More
Think of the weirdest creatures you’ve even seen in a sci-fi film. Now think of this: there are far stranger, albeit smaller, critters living in your own home. And Rob Dunn at North Carolina State University wants you to go on safari to find them.
Research has been done on the diversity of b... Read More
It's not unusual for a patient to change doctors. Doctors retire, families move, insurance changes.
And sometimes, patients get fired.
"Discharging parents from a practice is never easy," says Thomas Tryon, a pediatrician at Children's Mercy Hospitals and Clinics in Kansas City, Mo. "I nev... Read More
New research suggests a pattern of outpatient antibiotic overuse in parts of the United States - particularly in the Southeast - a problem that could accelerate the rate at which these powerful drugs are rendered useless, according to Extending the Cure, a project of the Center for Disease Dynam... Read More
Preventing pathogenic bacteria from sensing nutrient starvation may present a new therapeutic approach to increasing antibiotic efficacy and preventing drug resistance, researchers claim. A team led by McGill University investigators has found that blocking an active mechanism used by bacteria t... Read More
University of California, Berkeley, scientists have shown that ionized plasmas like those in neon lights and plasma TVs not only can sterilize water, but make it antimicrobial - able to kill bacteria - for as long as a week after treatment.
Devices able to produce such plasmas are cheap, whi... Read More