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New data about the laws governing embryo development in organisms

Research aimed at understanding the mechanisms underlying embryo development has taken a step forward thanks to collaborative work between biologists specialized in the study of the fruit fly (Drosophila melanogaster) and scientists specialized in the design of mathematical models that simulate the functioning of biological systems.

12 Jul 2007

First mouse model of lung transplantation

Lung transplants have been performed successfully for more than 20 years in humans but never before in mice – until now.

12 Jul 2007

New evidence of very recent human adaptation

A Cornell study of genome sequences in African-Americans, European-Americans and Chinese suggests that natural selection has caused as much as 10 percent of the human genome to change in some populations in the last 15,000 to 100,000 years, when people began migrating from Africa.

12 Jul 2007

Ago2 and hematopoiesis

Argonaute 2 (Ago2) is unique among its family: It is the only one of the four mammalian Argonaute proteins that exhibits endonuclease 'slicer' activity (facilitation of miRNA-guided cleavage of target mRNA).

12 Jul 2007

New model of early biological evolution

In a study publishing in PLoS Computational Biology, Shakhnovich et al present a new model of early biological evolution , the first that directly relates the fitness of a population of evolving model organisms to the properties of their proteins.

12 Jul 2007

New genetic function involved in embryo development in organisms

11 Jul 2007

3-D microscopic views of tiny mouse brains available online

A multi-institutional consortium including Duke University has created startlingly crisp 3-D microscopic views of tiny mouse brains - unveiled layer by layer - by extending the capabilities of conventional magnetic resonance imaging.

10 Jul 2007

Magnetic nano tweezers show how cancer drug works

The annoying bulges of an over-wound telephone cord that shorten its reach and limit a caller's motion help to explain why drugs called camptothecins are so effective in killing cancer cells, according to investigators at St. Jude Children's Research Hospital and Delft University of Technology.

10 Jul 2007

Rapid evolution of defense genes in plants may produce hybrid incompatibility

One of the basic tenets of evolution is speciation in which populations of the same species become so genetically and morphologically variable that they can be classified as two different species.

10 Jul 2007

Ownership of genetic information

We all share our genetic make up with relatives, but should we also share ownership of the results of DNA analysis or should this knowledge be considered private?

9 Jul 2007

Ancient DNA suggests earth was warmer than previously believed

A team of international researchers has collected the oldest ever recovered DNA samples and used them to show that Greenland was much warmer at some point during the last Ice Age than most people have believed.

9 Jul 2007

NanoSIMS instrument clarifies nutrient cycle

Scientists at the University of Southern California have applied a nanoscale imaging method to a biological system, helping to clear up an old puzzle of the global carbon and nitrogen cycle.

9 Jul 2007

Engineered blood vessels work like native tissue

Blood vessels that have been tissue-engineered from bone marrow adult stem cells may in the future serve as a patient's own source of new blood vessels following a coronary bypass or other procedures that require vessel replacement, according to new research from the University at Buffalo Department of Chemical and Biological Engineering.

9 Jul 2007

Chickens orientate themselves by the Earth's magnetic field

40 years ago, Prof. Dr. Wolfgang Wiltschko was the first to prove that migrating robins use the Earth's magnetic field to direct themselves during migration.

9 Jul 2007

Amoebae control cheating by keeping it in the family

No one likes a cheater, even a single-celled one. New research from Rice University shows how cooperative single-celled amoebae rely on family ties to keep cheaters from undermining the health of their colonies.

9 Jul 2007

Investigating life in extreme environments

From the deepest seafloor to the highest mountain, from the hottest region to the cold Antarctic plateau, environments labelled as extreme are numerous on Earth and they present a wide variety of features and characteristics.

5 Jul 2007

Scientists measure distraction

A scientific indicator of how easily distracted you are has been designed by a UCL (University College London) psychologist. It could be used as another assessment tool during the recruitment process and would have particular benefits in fields where employee distraction could lead to fatal errors.

4 Jul 2007

Human immune system in a test tube

Surgical instruments or implants that are contaminated with residual bacteria, or pyrogens, can cause blood poisoning in patients. Researchers are developing a test that imitates the human immune system in the laboratory, eliminating the need for animal experiments.

4 Jul 2007

Understanding the human journey

In the first scientific publication from The Genographic Project, a five-year effort to understand the human journey, we see the first attempts to answer these age-old questions.

29 Jun 2007

Researchers increase in vivo lifetime of nanoparticles

Researchers at the University of California, Santa Barbara have discovered that attaching polymeric nanoparticles to the surface of red blood cells dramatically increases the in vivo lifetime of the nanoparticles.

29 Jun 2007