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What are some of the most important, iconic, and/or beautiful scientific images?

Maggie Koerth-Baker over at Boing Boing dug up a great thread at Quora asking users to share their favorite iconic scientific photos. The page has grown into a beautiful collection of images ranging from Darwin's illustration of finch beak variations from the Galapagos Islands to the Hubble Deep... Read More

India polio-free for one year

A year has passed since the last reported case of poliomyelitis in India, which occurred on 13 January 2011 in a two year old girl in Howrah, West Bengal. Read More

Kawaoka paper published on aerosol transmission of H5 influenza virus in ferrets

One of two papers on avian influenza H5N1 virus that caused such a furor in the past six months was published today in the journal Nature. I have read it, and I can assure you that the results do not enable the construction of a deadly biological weapon. Instead, they illuminate important requir... Read More

TWiV 167: It starts with a cough



Hosts: Vincent Racaniello, Dickson Despommier Read More

Salmonella fears spur ban of Mexican papayas in U.S.

The federal Food and Drug Administration is banning imports of all papayas grown in Mexico because of widespread and ongoing salmonella contamination, the agency announced Thursday.

More than 15 percent of fresh papayas entering the U.S. from Mexico were contaminated with the foodborne bacter... Read More

New study maps hotspots of human-animal infectious diseases and emerging disease outbreaks

A new global study mapping human-animal diseases like tuberculosis (TB) and Rift Valley fever finds that an "unlucky" 13 zoonoses are responsible for 2.4 billion cases of human illness and 2.2 million deaths per year. The vast majority occur in low- and middle-income countries.

The report, wh... Read More

Swine Flu Type Virus Reported In Iowa

The Centers for Disease Control and Prevention has confirmed three mildly ill children with viruses similar to the swine-origin influenza A (H3N2) viruses identified in three other states. These viruses contain the "matrix (M) gene segment" from the 2009 "Swine Flu" pandemic known as H1N1 virus.... Read More

Small Comfort: Nanomedicine Able to Penetrate Bodily Defenses

Researchers use stealthy nanoscale particles to infiltrate vaginal mucus and keep herpes at bay in mice.

Tears and a runny nose can be unpleasant on a windy day, but these mucosal secretions play a vital role in protecting the body from viruses and other malicious microbes. Unfortunately, muc... Read More

The Microbial Academy of Sciences: What Bacteria Can Discover That We Can’t

Other than basic stuff like the Earth rotating around the sun and E=MC2, how much do you know about the universe? Most people would say: not very much. But if you’re a theoretical physicist, you probably know quite a bit more--but still not that much; most of the mysteries of the universe still ... Read More

TWiV 179 Letters

Ebrahim writes:


Dear Dr. Racaniello


I was watching the conference in Dublin and I wanted to thank you for sharing my e-mail with the people in the panel, since I saw how nice it was for me to reach the specialists with that ease through TWIV.<... Read More

Human Response to Bacterial Infection and Resolution in Mice, Simulated

Reporting in the Proceedings of the National Academy of Sciences, a team of Jefferson immunologists found that a specialized "human immune system" mouse model closely mimics a person's specific response and resolution of a tick-borne infection known as relapsing fever, caused by the bacteria Bor... Read More

TWiV 188 Letters

Judi writes:


To our TWIV leaders!


If you have a mac with Apps, please go to the app store and download cell images.... I think you'll have a great time going through them.


One other thing - I listened to your show on science reform with interest but I ... Read More

Bacteria that live on the Atkins Diet

Bacteria have adapted to live in many niches; from the environmental bacteria that live in the soil and the seas, to the highly specialised intracellular bacteria that rely exclusively on their surrounding host for nutrients. While all bacteria face challenges in adapting their environment to su... Read More

'Dirty' Wild Mice May Be More Relevant Immunology Model

Like humans, mice that live in their natural habitat encounter bacteria and other pathogens that exercise their immune system, yet the lab mice typically used in immunology studies are raised in isolation from most diseases. A study on natural killer cells in wild mice published in Molecular Eco... Read More

Allergies linked to baby's birthplace, gut bugs

Researchers found that babies were more likely to harbor a certain kind of bacteria in their intestines if they were born in the hospital, and especially by cesarean section -- and those gut bugs were tied to a kid's chances of later getting allergies or asthma.

The study included about 2,700... Read More

Racial discrimination in science: A black and white answer

You might expect that science, particularly American science, would be colour-blind. Though fewer people from some of the country’s ethnic minorities are scientists than the proportions of those minorities in the population suggest should be the case, once someone has got bench space in a labora... Read More

Mysterious nodding syndrome spreading through Uganda

Large areas of northern Uganda are experiencing an outbreak of nodding syndrome, a mysterious disease that causes young children and adolescents to nod violently when they eat food. The disease, which may be an unusual form of epilepsy, could be linked to the parasitic worm responsible for river... Read More

TWiP 29 Letters

Dylan writes:

Dear Professors Racaniello and Depommier,


I hope this email finds you both in good health. I am a second year medical student from Ireland studying at the University of Cambridge, UK and I have been following the TWiP series with considerable interest... Read More

A mad cow in America

A dairy cow in California is the fourth known American case of mad cow disease, which is caused by prions, infectious agents composed only of protein (the story hit the press the day after my lecture on this type of illness). Unlike viruses, prions have no nucleic acid and no protective coat. Bu... Read More

David and Goliath: How one cytokine may take down influenza

Recent research has suggested a new method of flu prevention and treatment: the administration of granulocyte macrophage-colony stimulating factor (GM-CSF) to the lungs of mice significantly reduced flu symptoms and prevented mortality after a lethal dose of influenza virus. GM-CSF helps the bod... Read More

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