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DNA Precipitation: Ethanol vs. Isopropanol - a discussion of best practices

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

Higher Pneumococcal Disease Vaccination Rates Needed to Protect More At-Risk US Adults

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

Flu virus sometimes fights secondary infections

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

MSU awarded $25 million for NSF center to study evolution in action

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

MTS44 Michael Worobey - In Search of the Origin of HIV and H1N1's Hidden History

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'Secret Weapon' of Retroviruses That Cause Cancer

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

Attacking Implant Infections

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

Detachable needles on syringes promote hepatitis C transmission, study says

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 acts on gene networks

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

Popular Misconceptions about DNA Isolation and Quantification

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

How Plasmids Became Embroiled In The Cold War

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

Blastomyces dermatitidis

Blastomyces dermatitidis. Yeast phase. Interference phase microscopy Read More

Further Doubt Cast on Virus Link to Chronic Fatigue Syndrome

Researchers investigating UK samples have found no association between the controversial xenotropic murine leukaemia virus-related virus (XMRV) and chronic fatigue syndrome (CFS). Their study, published in BioMed Central's open access journal Retrovirology, calls into question a potential link d... Read More

Five questions about lysogeny

Merry Youle from www.smallthingsconidered.us explores 5 questions about lysogeny, the life cycle that takes place when a bacteriophage infects certain types of bacteria. Read More

Monitoring H1N1 with Twitter--interview with Philip Polgreen of the University of Iowa

Micro-blogging via Twitter is being evaluated as a means for tracking infectious diseases. The 2009 outbreak of H1N1 provided them an opportunity for testing Twitter as an approach for tracking disease outbreaks. From the end of April, researchers at the University of Iowa began collecting Twitt... Read More

A frail King Tut died from malaria, broken leg

Egypt's most famous pharaoh, King Tutankhamun, was a frail boy who suffered from a cleft palate and club foot. He died of complications from a broken leg exacerbated by malaria and his parents were most likely brother and sister.

Two years of DNA testing and CT scans on Tut's 3,300-year-old m... Read More

Biofilters to clear city's air

Columbus can stink.

Visitors to Downtown can be greeted with an odiferous punch from time to time, but the city is starting a project to fix that problem -- especially because it is finishing a $44 million effort designed to draw people to the Scioto riverfront.

A $6 million project to har... Read More

Researcher: Bacteria in tap water can be beneficial

Ridding tap water of bacteria with chemicals is a common practice in America, but one Biodesign Institute researcher is finding benefits to putting the bacteria back in.

The use of microbial agents to decontaminate tap water has long been the standard in Europe, but an American bias against b... Read More

White Blood Cells Devour Bacteria In Amazing 1950s Science Clip

A less than 30-second movie from the 1950s shows a white blood cell (neutrophil) pursuing the Staphylococcus aureus bacteria on blood film.

The 16-mm moving image was captured by late David Rogers, who at the time was a professor at Vanderbilt University and went on to co-chair the National C... Read More

FDA Warned Kellogg About Contaminated Eggo Waffles

The Food and Drug Administration warned Kellogg Company to improve sanitation measures at their Eggo frozen waffles plant. The FDA claims the company hasn't gone far enough to address food violations at its Atlanta, Georgia frozen foods plant, where officials found products contaminated with Li... Read More

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