years 2 1

Tag: "years" at biology news

A gene's first 'kiss' sets off that affair known as puberty

...and girls are primed for their sexual reproductive years as men and women, appears to be triggered by the b... of age, then reemerge in full force some 10 to 12 years later? "Puberty is critical to human development. And while there is a fairly good understanding of...

Wisconsin scientists grow critical nerve cells

After years of trial and error, scientists have coaxed human e...one day be used in therapy, it will likely be many years before they can be tested in humans, Zhang says. ...

New push for public health, AIDS spending at African Union summit

...s gross domestic product to healthcare in the four years since the goal was stated during the founding of t... billion that President George W Bush promised two years ago for the fight against AIDS. ...

Man and mouse share genome structures

...began to develop the analytical techniques several years earlier, working with the smaller yeast genome. To investigate the much larger human genome, they collaborated with Affymetrix. They isolated the DNA regions with certain major methyl and acetyl tags, and used new microarray technology to identify th...

Molecular biology fills gaps in knowledge of bat evolution

...d echolocation - originated about 52 to 50 million years ago during a lush period of significant global warming in a region that is now North America. This latest research helps fill gaps in the evolutionary history of one of the most diverse group of mammals on earth and the only mammals capable of power...

Genes In The Interferon System Important In Systemic Lupus Erythematosus

...to SLE," says ProfessorAnn-Christine Syvänen.A few years ago Lars Rönnblom and Professor Gunnar Alm at the SwedishUniversity of Agricultural Sciences were virtually the only researcherswho claimed that the interferon system, which is involved in the body'sdefense against viruses, etc., was also behind the ...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...ng ever since the oceans first formed four billion years ago. Conditions below the sea floor may most close... repeat episodically over hundreds of thousands of years as abyssal hills are uplifted and spread away from the mid-ocean ridge crest. Haymon compared the s...

Researchers discover way to make cells in the eye sensitive to light

...ems, the rods andcones. However, over the last few years it has become increasinglyaccepted that we have a third system, which uses melanopsin, that haslain undetected during decades of vigorous scientific investigation."Professor Hankins and Dr Lucas were part of the team who previouslydiscovered a new li...

Source of molecular triggers in cutaneous T cell lymphoma identified

...ied CTCL as a separate category of lymphoma thirty years ago. The Yale research group reported that, like all T cells, the cancerous CTCL cells require antigenic stimuli delivered by specialized dendritic cells of the epidermis, referred to as Langerhans cells (LC), in order to replicate. To determine th...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

... of Sciences.The team's findings, based on several years of research at the park,refute the popular idea th...cause the technology didn't existuntil about seven years ago. Now we can detect very low-levelconcentrations of hydrogen in water," Spear explained."We found...

Controversial drug shown to act on brain protein to cut alcohol use

...st African shrub, Ibogaine has been championed for years by acadre of clinicians and drug treatment advocat...e when exposed to the drug of abuse months or even years afterbreaking the habit.In this analysis, the researchers provided alcohol to rats until theyhad bec...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...hat many efforts have been made during thelast few years to try to eliminate any animal-derived culturecomponents in human stem cell culture. However, many of the specializedmedia used for growth and differentiation still contain materials fromanimal sources and are hence contaminated with Neu5Gc.In additi...

Elusive HIV shape change revealed; Key clue to how virus infects cells

... receptor and changes its shape was solved several years ago by another group. Harrison and Chen have now described gp120's structure before the shape change, yielding vital before-and-after information on how the molecule rearranges itself when it encounters the CD4 receptor. "Knowing how gp120 changes s...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...n why the parasite can stay hidden in the body for years at a time. Such information may help researchers find better means to harness the immune system to eradicate infection through vaccine development. A number of the metabolic adaptations and stratagems identified from the E. histolytica genome also h...

Antarctic ice shelf retreats happened before

... shelf experienced an extensive retreat about 9500 years ago, more than anything seen in recent years. The ...VI Ice Shelf. The results revealed that about 9500 years ago the ice shelf retreated, allowing the sea to flood into the lake. The ice shelf didn't reform un...

Anti-bacterial additive widespread in U.S. waterways

...ban, for example, has an estimated half lifeof 1.5 years in aquatic sediments. Do the potential benefits ofantimicrobial products outweigh their known environmental and humanhealth risks? This is a scientifically complex question consumers,knowingly or unknowingly, answer to everyday in the checkout line o...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...e no treatment and have a lifespan of more than 20 years after diagnosis. Since the disease most often stri...apy and have a lifespan of only about six to eight years after diagnosis despite treatment. Scientists, including Drs. Chiorazzi, Rai and others at North Sh...

The secret to longevity in tubeworms

With an incredible lifespan of up to 250 years the deep sea tube worm, Lamellibrachia luymesi is ... the model predicts an average lifespan of only 39 years in a colony of 1,000 individuals; with it, survival increases to over 250 years, matching the longev...

Another Look Finds Promising Proteomics Test is Not Biologically Plausible

... and a lack of standards, I think it will be a few years before we can know what works.?/p> The study was funded by the National Cancer Institute. ...

Affymetrix Unveils Plans to Double Plant and Animal Genome Microarray Offering

...ogy for gene expression analysis. Over thepast ten years more than 3,000 papers have been published usingGeneChip technology. For more information, please visitwww.Affymetrix.com....

1 2 3 4 5 6 7 8 9 10