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Category: Stem Cell Research

Stem cells that have been specifically developed for use as clinical therapies are fit for use in patients, an independent study of their genetic make-up suggests.

Full articleNovember 26, 2015 07:05 PM1060 views
Category: Environment

This is a scanning electron microscope image of a coccolithophore, which can measure from 5 to 15 microns across, less than a fifth the width of a human hair.
A microscopic marine alga is thriving in the North Atlantic to an extent that defies scientific predictions, suggesting swift environmental change as a result of increased carbon dioxide in the ocean, a study led a by Johns Hopkins University scientist has found.

Full articleNovember 26, 2015 07:05 PM959 views
Category: Bioinformatics

Scientists have mapped out the genes that keep our cells alive, creating a long-awaited foothold for understanding how our genome works and which genes are crucial in disease like cancer.

Full articleNovember 25, 2015 06:55 PM1460 views
Category: Molecular & Cell Biology

A particular location in DNA, called the Dlk1-Gtl2 locus, plays a critical role in protecting hematopoietic, or blood-forming, stem cells--a discovery revealing a critical role of metabolic control in adult stem cells, and providing insight for potentially diagnosing and treating cancer, according to researchers from the Stowers Institute for Medical Research.

Full articleNovember 25, 2015 06:55 PM812 views
Category: Health & Medicine

The mosquito-borne virus chikungunya may lead to severe brain infection and even death in infants and people over 65, according to a new study that reviewed a chikungunya outbreak on Reunion Island off the coast of Madagascar in 2005-2006. The study is published in the November 25, 2015, online issue of Neurology®, the medical journal of the American Academy of Neurology. Many cases have occurred in the United States in people who acquired the virus while traveling, but the first locally transmitted case in the U.S. occurred in Florida in July.

Full articleNovember 25, 2015 06:55 PM795 views
Category: AIDS & HIV

Nearly 37 million people worldwide are living with HIV. When the virus destroys so many immune cells that the body can't fight off infection, AIDS will develop. The disease took the lives of more than a million people last year.

Full articleNovember 25, 2015 06:55 PM733 views
Category: Molecular & Cell Biology

Tufts biologists induced one species of flatworm -- G. dorotocephala, top left -- to grow heads and brains characteristic of other species of flatworm, top row, without altering genomic sequence.
MEDFORD/SOMERVILLE, Mass. (November 24, 2015)--Biologists at Tufts University have succeeded in inducing one species of flatworm to grow heads and brains characteristic of another species of flatworm without altering genomic sequence. The work reveals physiological circuits as a new kind of epigenetics - information existing outside of genomic sequence - that determines large-scale anatomy.

Full articleNovember 24, 2015 07:18 PM1086 views
Category: Bioinformatics

Wild-type corn snakes typically exhibit, over a light orange background coloration, a pattern of dark orange dorsal saddles and lateral blotches that are outlined with black
Among the 5 000 existing species of mammals, more than 100 have their genome sequenced, whereas the genomes of only 9 species of reptiles (among 10 000 species) are available to the scientific community. This is the reason why a team at the University of Geneva (UNIGE), Switzerland, has produced a large database including, among others, the newly-sequenced genome of the corn snake, a species increasingly used to understand the evolution of reptiles. Within the same laboratory, the researchers have discovered the exact mutation that causes albinism in that species, a result published today in Scientific Reports.

Full articleNovember 24, 2015 07:18 PM937 views
Category: Health & Medicine

Researchers at The Tisch Cancer Institute at the Icahn School of Medicine at Mount Sinai have discovered a key mechanism by which radiation treatment (radiotherapy) fails to completely destroy tumors. And, in the journal Nature Immunology, they offer a novel solution to promote successful radiotherapy for the millions of cancer patients who are treated with it.

Full articleNovember 24, 2015 07:18 PM1178 views
Category: Biology

Columns of workers penetrate the forest, furiously gathering as much food and supplies as they can. They are a massive army that living things know to avoid, and that few natural obstacles can waylay. So determined are these legions that should a chasm or gap disrupt the most direct path to their spoils they simply build a new path -- out of themselves.

Full articleNovember 24, 2015 07:18 PM972 views
Category: Molecular & Cell Biology

Location of topologically associated domains (TAD) in the cell nucleus is shown.
Chromosome is a structure inside the cell nucleus that carries a large part of the genetic information and is responsible for its storage, transfer and implementation. Chromosome is formed from a very long DNA molecule - a double chain of a plurality of genes. Given that the diameter of the cell nucleus is usually around hundredth of a millimeter or even less, while the total length of DNA constituting human genome is about two meters, it is clear that DNA must be packaged very tightly.

Full articleNovember 23, 2015 06:00 PM1284 views
Category: Microbiology

Migration between different communities of bacteria is the key to the type of gene transfer that can lead to the spread of traits such as antibiotic resistance, according to researchers at Oxford University.

Full articleNovember 23, 2015 11:20 AM1282 views
Category: Biology

This image shows the nervous system of about 1 cm-long Hydra revealed here with a fluorescent green marker.
Champion of regeneration, the freshwater polyp Hydra is capable of reforming a complete individual from any fragment of its body. It is even able to remain alive when all its neurons have disappeared. Researcher the University of Geneva (UNIGE), Switzerland, have discovered how: cells of the epithelial type modify their genetic program by overexpressing a series of genes, among which some are involved in diverse nervous functions. Studying Hydra cellular plasticity may thus influence research in the context of neurodegenerative diseases. The results are published in Philosophical Transactions of the Royal Society.

Full articleNovember 23, 2015 11:20 AM1325 views
Category: Biology

This image shows a mantis shrimp in a defensive position, on its back with its legs, head and heavily armored tail closed over.
Researchers from the Queensland Brain Institute at The University of Queensland have uncovered a new form of secret light communication used by marine animals.

Full articleNovember 19, 2015 07:38 PM2548 views

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