Biologists awaken dormant viruses in the heart of our cell
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Viruses sometimes alumni hundreds of millions of years have colonized our DNA. A team of EPFL (Ecole Polytechnique Federale de Lausanne) have discovered how our bodies neutralizes these squatters. A breakthrough in understanding the evolution of species, which could also pave the way for new therapies against AIDS.
About half of our DNA does not [...]
ANTS
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Introduction / Purpose: I wanted to see what ants like to eat.
Hypothesis / Question: I thought that the ants would like honey because it’s pure sugar.
Materials: 1 candy bar, a little bit of salt, and some honey.
Procedure: Put the honey on a paper plate with a little candy bar and salt. [...]
The human immunodeficiency virus (HIV): from its discovery to its eradication
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This case is before us by Pierre-Alain Rubbo. It shows the human immunodeficiency virus (HIV): from its discovery to its eradication.
Introduction:
HIV belongs to the family of retroviruses and is the cause of acquired immunodeficiency syndrome (AIDS). This state is characterized in humans by a deficient immune system, making it vulnerable to certain pathogens [...]
Glaciers are melting in Alaska, but less quickly than expected
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Introduction / Purpose: I am a swimmer and my friend who swims with me has blond hair. Since she did not wash her hair in a long time it turned green and I wanted to know how and why.
Hypothesis / Questions: Will too much chlorine in the pool turn a blond person’s hair green and [...]
The researchers make accessible a new piece of structural genomics
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Researchers Grenoble Directorate of Life Sciences at the CEA, the CNRS and the University Joseph Fourier, just developed an approach finally making available a new part of the human genome for structural studies. Indeed, nearly 40% of proteins are characterized by an intrinsically disordered structure which does not permit their study by classical techniques of [...]
Four doctors winning the “Clinician Scientist Award” CSA
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This prize rewards scientists doing clinical research and translational. It is available to recipients of funds for their research and earnings over a three to five years. Disciplines awarded this year are: cancer, gynecology, obstetrics and ophthalmology. Overall in 2009, ten clinicians were awarded the prize CSA. The December 2009 winners are listed below:
Senior Investigators: [...]
A biological antifreeze discovered a beetle in Alaska
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Scientists at the Institute of Arctic Biology, University of Alaska Fairbanks have studied the rough beetle, a beetle that can withstand extreme temperatures and isolated its natural antifreeze: the xylomannan. This discovery could have applications for the industrial manufacture of antifreeze, or for the preservation of transplant organs.
In insects, the antifreeze molecules act to prevent [...]
Our stomach, his strength, his miseries
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Anatomy and Health Advice for life from the beginning of last century in the news back this Sunday.
Disclaimer: This news reverse transcribed for scientific, technical or other of 1906, and has therefore voluntarily arguments, uncertainties or errors of time.
While hunger is a general feeling of the body, we localize beneath the edge of the ribs, [...]
Butterflies threatened by climate change and habitat loss
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According to a study published in the PNAS (Ed.: Publications of the Academy of Sciences) last January 10 and funded by the National Science Foundation, climate change and habitat loss would cause a decrease the number of butterflies in California. Based on field data collected over the past 35 years, this comprehensive study draws attention [...]
The migratory behavior of eels explained by genetics
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A team of researchers from the Institute of Oceanic Research of the University of Tokyo offers an explanation for being done by the great migrations of freshwater eels at the time of replication. It would be a behavior inherited from an ancestor who lived in the marine environment.
The name “eel” in French refers to several [...]
