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Science News Archive February 2011 - Page 21


Page 21 of 25

Host or foreign -- the body's frontline defense mechanism understood

A collaboration between researchers at the University of Helsinki has cracked the long-standing question of how the human immune system recognizes foreign structures. The key to unlocking this problem lies in the protein-based marking and destruction system called complement, which distinguishes between microbes and own structures.

SourceUniversity of Helsinki·JournalProceedings of the National Academy of Sciences·DateFeb 4, 2011

First stars in universe were not alone

Astrophysicists used computer simulations to find that the first stars could have formed alongside multiple companions. The simulations suggest that these companion stars were born when the gas disks surrounding the first star broke up, giving rise to sibling stars in fragments.

SourceHeidelberg University·JournalScience·DateFeb 4, 2011

Smithsonian scientists discover 7 new species of fish

Scientists at Smithsonian Institution and Ocean Science Foundation used genetic analysis to identify 10 distinct species of blennies (Starksia) previously thought to be three. The discovery sheds light on the complexity of Caribbean reef life, with widespread species exhibiting geographically restricted ranges.

SourceSmithsonian·JournalZooKeys·DateFeb 4, 2011

Johns Hopkins researchers capture jumping genes

Scientists at Johns Hopkins University have discovered a significant number of new insertions of retrotransposon insertion polymorphisms (RIPs) in the human genome, expanding our understanding of genetic diversity. The study highlights the importance of retrotransposons in shaping human traits and disease risks.

SourceJohns Hopkins Medicine·JournalGenome Research·DateFeb 4, 2011

Top Queen's scientist gets UK recognition

Professor Alan Stitt has received a Royal Society Wolfson Research Merit Award to support his ground-breaking research on vascular stem cells and eye disease treatment at Queen's University. The award aims to retain top researchers in the UK and reflects the excellence of the School of Medicine, Dentistry and Biomedical Science.

Discovery of jumping gene cluster tangles tree of life

A team of researchers at Vanderbilt University has discovered a large cluster of genes that appeared to jump directly from one fungus species to another, significantly strengthening the argument for a mosaic theory of evolution. The finding was made possible by comparing the genomes of nearly 100 species of fungi.

SourceVanderbilt University·JournalCurrent Biology·DateFeb 4, 2011

Understanding conflict

Researchers investigate how ritual contributes to intergroup conflict and violence in various regions, including Northern Ireland, the Middle East, Nepal, and Colombia. The project aims to better understand the forces that drive human groups, informing conflict prevention and resolution efforts.

Genetic study uncovers new path to Polynesia

A new genetic study has found that the DNA of current Polynesians can be traced back to migrants from the Asian mainland who settled in islands close to New Guinea around 6,000 years ago. The research challenges previous theories on human migration, suggesting a 'voyaging corridor' between Southeast Asia and the Pacific

SourceUniversity of Leeds·JournalAmerican Journal of Human Genetics·DateFeb 3, 2011

Rheumatoid arthritis researchers redefine remission

Researchers redefine remission in rheumatoid arthritis by introducing two new provisional definitions that aim to standardize treatment goals. The new definitions focus on disease activity measures, including tender joint count, swollen joint count, and C-reactive protein levels.

SourceWiley·JournalArthritis & Rheumatism·DateFeb 3, 2011