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Tag: "bse" at biology news

Scientists observe how a close bond activates the immune system

The immune system is highly complex. The cast of characters alone required to marshal an immune response to a foreign invader can number in the millions as the body's soldiers, T cells, are called into action. What triggers this complex response begins when T cells and dendritic cells, another type of immune cell, form a kind of molecular embrace, or immunological synapse, to relay information ab...

Absence of critical protein linked to infertility

The absence of a key protein may lead to infertility. . .. Without it, they say, an embryo cannot survive in uterine tissue or attach to a mother's blood supply. Other genes also play roles, but C/EBPb is critical for implantation of an embryo, sa...

Recombination protein dynamics observed with single monomer resolution

Using a sensitive, single-molecule measurement technique, researchers at the University of Illinois at Urbana-Champaign have observed the life cycle of RecA, a protein that plays a major role in repairing damaged DNA. . .. RecA is a DNA recombination protein found in the gut bacterium E. coli. A human homolog, called Rad51, interacts with many proteins, including BRCA2, whose mutation increases s...

New approach to BSE successful in lab

A new method of treatment can appreciably slow down the progress of the fatal brain disease scrapie in mice. This has been established by researchers from the Universities of Munich and Bonn together with their colleagues at the Max Planck Institute in Martinsried. To do this they used an effect discovered by the US researchers Craig Mello and Andrew Fire, for which they were awarded this year’s...

Fish can determine their social rank by observation alone, study finds

A male fish can size up potential rivals, and even rank them from strongest to weakest, simply by watching how they perform in territorial fights with other males, according to a new study by Stanford University scientists. The researchers say their discovery provides the first direct evidence that fish, like people, can use logical reasoning to figure out their place in the pecking order. . The...

A first -- Hebrew University scientist observes brain cell development in 'real time'

. Dr. Adi Mizrahi of the Department of Neurobiology at the Alexander Silberman Institute of Life Sciences at the Hebrew University, used mouse models to study how neurons, or nerve cells, develop from an undifferentiated cellular sphere into a rich and complex cell. This has great significance for the future of brain research, said Dr. Mizrahi, since "the structural and functional complexity of...
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Breaking Biology News(10 mins):Baboons groom early in the day to get benefits later 2
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