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Volcanic ash and human health - new way of estimating risk

A new, rapid and cheap way of estimating the potential risk posed to human health by volcanic ash has been devised by a Durham University expert.

10 Oct 2007

Natural selection at the genetic level

In a molecular tour de force, researchers at the University of Wisconsin-Madison have provided an exquisitely detailed picture of natural selection as it occurs at the genetic level.

10 Oct 2007

Spread of endogenous retrovirus K is similar in the DNA of humans and rhesus monkeys

According to paleontologic and molecular studies, the chimpanzee (Pan troglodytes) is the closer relative to the humans (Homo sapiens) and that both lineages had a common ancestor at 5 to 7 million years ago.

10 Oct 2007

Mathematicians help unlock secrets of the immune system

A group of scientists, led by mathematicians, has taken on the challenge of building a common model of immune responses.

10 Oct 2007

Tiny radioactive molecules provide novel way to fight colorectal cancer

Johns Hopkins scientists have developed a potentially novel way to fight colorectal cancer using tiny molecules to deliver potent barrages of radiation inside cancer cells, unlike current treatments that bind to the surface of cells and attack from the outside and cause unwanted side effects.

10 Oct 2007

Better understanding of what genomic changes paved the way for modern humans

Researchers have answered a similarly vexing (and far more relevant) genomic question: Which of the thousands of long stretches of repeated DNA in the human genome came first?

9 Oct 2007

New insight on jumping genes

Keck Graduate Institute (KGI) announced that Dr. Animesh Ray, KGI professor and director of KGI's PhD program, has published a paper in the international online journal PLoS ONE that sheds new light on the evolution of moveable genetic elements, or "jumping genes."

9 Oct 2007

In biology, polarization is a good thing

Using a molecular cellular compass, individual cells in complex organisms know which way is up or down, in epithelial cells known as apical-basal polarity.

9 Oct 2007

Carbon nanotubes show great potential for use as cellular probes

As "nanopipes" they can be used to transport liquids to or from cells and inject solutions or drugs directly into individual cells and individual organelles within the cells.

8 Oct 2007

Deep-frozen HIV specimens

The development of an HIV vaccine is hindered by the rapidity with which the virus mutates.

8 Oct 2007

The origin of mammalian network of lymphatic vessels

Investigators at St. Jude Children's Research Hospital settled a century-old debate on the origin of the mammalian lymphatic vasculature - the network of vessels and capillaries critical to various essential housekeeping functions in the body.

4 Oct 2007

PAZAR - virtual bazaar of gene regulation data

An international team has opened a virtual bazaar, called PAZAR, which allows biologists to share information about gene regulation through individually managed 'boutiques' (data collections).

4 Oct 2007

Molecular basis of the cyanide polymorphism

That clover necklace you make for your child could well be a ring of poison.

2 Oct 2007

Scientists study folding of the brain's cortex

Engineers at Washington University in St. Louis are finding common ground between the shaping of the brain and the heart during embryonic development.

2 Oct 2007

Protein architectures provide window on the history of life

The present can tell you a lot about the past, but you need to know where to look.

2 Oct 2007

Origin of the mammalian lymphatic vasculature

In the October 1 issue of G&D, Dr. Guillermo Oliver (St. Jude Children's Research Hospital) and colleagues present new evidence to resolve a century-old debate over the origin of the mammalian lymphatic vasculature.

1 Oct 2007

Feeding the world without genetic engineering

The work of a Kansas State University professor is challenging the assumption that genetically engineered plants are the great scientific and technological revolution in agriculture and the only efficient and cheap way to feed a growing population.

1 Oct 2007

Scientists perform computer simulation that shows how proteins vibrate in a crystal

An international collaboration directed by an Oak Ridge National Laboratory researcher has performed the first-ever atomic-detail computer simulation of how proteins vibrate in a crystal.

27 Sep 2007

New view of what causes greatest genetic variability among individuals

A study by Yale researchers offers a new view of what causes the greatest genetic variability among individuals - suggesting that it is due less to single point mutations than to the presence of structural changes that cause extended segments of the human genome to be missing, rearranged, or present in extra copies.

27 Sep 2007

Genetic sequence of Giardia complete

Giardia lamblia, one of the most common human parasites in the United States, causes more than 20,000 intestinal infections a year, often through contact with contaminated drinking or swimming water.

27 Sep 2007