Los temas que vamos a tratar esta semana son: tendencias hereditarias a contraer infecciones cerebrales, convertir biomasa en hidrógeno, termitas que producen un combustible alternativo y, para final... Read More
A company is planning to inject people with an HIV vaccine made of the deadly virus itself, albeit a deactivated version.
Vaccines against many viruses, including flu, are made from deactivated versions of those viruses, but such an approach was previously dismissed as too risky in the case o... Read More
Small Things Considered blogger Merry Youle has authored a post on the sequencing of Roseovarius nubinhibens. a bacterium that recently joined the group of about a thousand bacteria whose genomes have been sequenced. Researcher José González and colleagues in Mary Ann Moran's lab at the Universi... Read More
British researchers have devised a way to capture vaccines in a glass-like membrane composed of sugar, a feat that could eliminate the need for refrigeration of vaccines and revolutionize their distribution in the developing world. Tests have shown that the technique can preserve vaccines for as... Read More
A team of biologists has unraveled the biochemistry of how bacteria so precisely time cell division, a key element in understanding how all organisms from bacteria to humans use their biological clocks to control basic cellular functions.
The discovery, detailed in the February 19 issue of th... Read More
In a finding that bodes well for the development of new human antibiotics, Harvard researchers have determined the identity of the trigger that causes roundworm bacteria to excrete virulent substances.
Harvard Medical School Professor Jon Clardy teamed with researchers in the department of bi... Read More
When a bacterium evolves resistance to a particular antibiotic, it's problematic. When it evolves defenses against antibiotics in general, as Pseudomonas aeruginosa has done, it's terrifying. But now researchers have devised an antibiotic that attacks the germ in a completely new way that appear... Read More
Blastomyces dermatitidis in tissue from patient from Uganda, Africa. Gridley's stain Read More
Some of science's most powerful statements are not made in words. From the diagrams of DaVinci to Rosalind Franklins x-rays, visualization of research has a long and literally illustrious history. To illustrate is to enlighten. The National Science Foundation (NSF) and Science created the Intern... Read More
Since our most popular article of all time (“The Basics: How Ethanol Precipitation of DNA and RNA Works”) was published, many Bitesize Bio readers have asked us to further explain the difference between precipitating DNA with ethanol vs. isopropanol and which is the better choice. This article d... Read More
The American Society for Microbiology, the National Foundation for Infectious Diseases (NFID), and other leading medical and health organizations agree that pneumococcal immunization rates among adults need to be improved to reduce the impact of pneumococcal illness and death in this population.... Read More
Influenza doesn't kill, though it can damage the lungs. Instead, it's the secondary infections that come in its wake, things like bacterial pneumonia and pneumococcal infections, that take lives.
Now researchers at Yale University School of Medicine in New Haven have discovered that the pr... Read More
Michigan State University announced today that it was awarded a $25 million grant from the National Science Foundation to establish a center, bringing together scientists from across the nation to study evolution in action in both natural and virtual settings.
MSU has been awarded one of five... Read More
Oncogenic retroviruses are a particular family of viruses that can cause some types of cancer. Thierry Heidmann and his colleagues in the CNRS-Institut Gustave Roussy-Université Paris Sud 11 "Rétrovirus endogènes et éléments rétroïdes des eucaryotes supérieurs" Laboratory have studied these viru... Read More
Nearly 1 million people undergo a hip, knee or shoulder replacement every year, according to the American Academy of Orthopaedic Surgeons, and in about 1 to 2 percent of those cases, an implant gets infected. The most common cause of these infections is a type of bacteria Staphylococcus epidermi... Read More
The high incidence of hepatitis C infections among drug abusers may be due in part to the use of syringes with detachable needles, which are more likely to transfer viable viruses from one user to the next, Yale University researchers will report Friday. Their study is reputed to be the first th... Read More
Natural selection – the force that drives evolution – acts not only on whole organisms and individual genes, but also on gene networks, according to a new study appearing in Nature this week.The finding suggests that natural selection is both more powerful and more complex than scientists recogn... Read More
Problems achieving high yield and purity DNA are exaggerated in environmental samples because of the added complexity of microorganism lysis and inhibitor removal. Quantifying the nucleic acids in these samples is the easy part. But if you don’t know what to look for, you can easily make mista... Read More
The humble plasmid. We now know it so well, but as little as 60 years ago the field of extra-chromosomal heredity was decidedly murky. Not only was it the subject of great debate, conflict and friction within the scientific community, it was even used as a politico-religious tool during the Cold... Read More