ScienceDaily: Gene News

http://www.sciencedaily.com/news/health_medicine/genes/ Genes and Genetics News. Read today's medical research in genetics including what can damage genes, what can protect them, and more.en-usSat, 24 Nov 2012 05:54:25 ESTSat, 24 Nov 2012 05:54:25 EST60http://www.sciencedaily.com/images/logosmall.gifhttp://www.sciencedaily.com/news/health_medicine/genes/ For more science articles, visit ScienceDaily.http://www.sciencedaily.com/releases/2012/11/121123092132.htm The genome encodes the complete information needed by an organism, including that required for protein production. Viruses, which are up to a thousand times smaller than human cells, have considerably smaller genomes. Using a type of herpesvirus as a model system scientists have shown that the genome of this virus contains much more information than previously assumed. The researchers identified several hundred novel proteins, many of which were surprisingly small.Fri, 23 Nov 2012 09:21:21 ESThttp://www.sciencedaily.com/releases/2012/11/121123092132.htmhttp://www.sciencedaily.com/releases/2012/11/121122152928.htm Scientists have made a major advance in understanding how flu viruses replicate within infected cells. The researchers used cutting-edge molecular biology and electron-microscopy techniques to ?see? one of influenza?s essential protein complexes in unprecedented detail. The images generated in the study show flu virus proteins in the act of self-replication, highlighting the virus?s vulnerabilities that are sure to be of interest to drug developers.Thu, 22 Nov 2012 15:29:29 ESThttp://www.sciencedaily.com/releases/2012/11/121122152928.htmhttp://www.sciencedaily.com/releases/2012/11/121122152910.htm Fifty years after scientists first posed a question about protein folding, the search for answers has led to the creation of a full-fledged field of research that led to major advances in supercomputers, new materials and drug discovery, and shaped our understanding of the basic processes of life, including so-called "protein-folding diseases" such as Alzheimer's, Parkinson's and type II diabetes.Thu, 22 Nov 2012 15:29:29 ESThttp://www.sciencedaily.com/releases/2012/11/121122152910.htmhttp://www.sciencedaily.com/releases/2012/11/121121145638.htm Researchers recently uncovered a nerve cell's internal clock, used during embryonic development. This breakthrough could lead to the development of new tools to repair and regenerate nerve cells following injuries to the central nervous system.Wed, 21 Nov 2012 14:56:56 ESThttp://www.sciencedaily.com/releases/2012/11/121121145638.htmhttp://www.sciencedaily.com/releases/2012/11/121121145621.htm Using a new technique called cryo-electron tomography, scientists have created a three-dimensional map that gives a better understanding of how the architecture of the rod sensory cilium (part of one type of photoreceptor in the eye) is changed by genetic mutation and how that affects its ability to transport proteins as part of the light-sensing process.Wed, 21 Nov 2012 14:56:56 ESThttp://www.sciencedaily.com/releases/2012/11/121121145621.htmhttp://www.sciencedaily.com/releases/2012/11/121121130933.htm Researchers have resolved the structure of that allows a telomere-related protein, Cdc13, to form dimers in yeast. Mutations in this region of Cdc13 put the kibosh on the ability of telomerase and other proteins to maintain telomeres.Wed, 21 Nov 2012 13:09:09 ESThttp://www.sciencedaily.com/releases/2012/11/121121130933.htmhttp://www.sciencedaily.com/releases/2012/11/121121130811.htm Cancer therapies often have short-lived benefits due to the emergence of genetic mutations that cause drug resistance. A key gene that determines resistance to a range of cancer drugs has been reported in a new study. The study reveals a biomarker that can predict responses to cancer drugs and offers a strategy to treat drug-resistant tumors based on their genetic signature.Wed, 21 Nov 2012 13:08:08 ESThttp://www.sciencedaily.com/releases/2012/11/121121130811.htmhttp://www.sciencedaily.com/releases/2012/11/121121130703.htm Two recent studies delve into the role of chromatin modifying enzymes and transcription factors in tumour cells. In one, it was found that the PARP1 enzyme activated by kinase CDK2 is necessary to induce the genes responsible for the proliferation of breast cancer cells in response to progesterone. In another, extensive work has been undertaken to identify those genes activated by the administration of progesterone in breast cancer, the sequences that can be recognized and how these genes are induced.Wed, 21 Nov 2012 13:07:07 ESThttp://www.sciencedaily.com/releases/2012/11/121121130703.htmhttp://www.sciencedaily.com/releases/2012/11/121121130643.htm Previously discarded, human-specific ?junk? DNA represents untapped resource in the study of diseases like Alzheimer?s and autism.Wed, 21 Nov 2012 13:06:06 ESThttp://www.sciencedaily.com/releases/2012/11/121121130643.htmhttp://www.sciencedaily.com/releases/2012/11/121121130633.htm In a new study, researchers describe markers and a model that quantify how aging occurs at the level of genes and molecules, providing not just a more precise way to determine how old someone is, but also perhaps anticipate or treat ailments and diseases that come with the passage of time.Wed, 21 Nov 2012 13:06:06 ESThttp://www.sciencedaily.com/releases/2012/11/121121130633.htmhttp://www.sciencedaily.com/releases/2012/11/121121104552.htm New research has found there are several different ways that kidney tumors can achieve the same result -- namely, grow.Wed, 21 Nov 2012 10:45:45 ESThttp://www.sciencedaily.com/releases/2012/11/121121104552.htmhttp://www.sciencedaily.com/releases/2012/11/121121104416.htm Clumped proteins can be dissolved with the aid of cellular repair systems -- a process of critical importance for cell survival especially under conditions of stress. Researchers have now decrypted the fundamental mechanism for dissolving protein aggregates that involves specific molecular chaperones.Wed, 21 Nov 2012 10:44:44 ESThttp://www.sciencedaily.com/releases/2012/11/121121104416.htmhttp://www.sciencedaily.com/releases/2012/11/121121104401.htm New understanding of molecular changes that convert harmless cells surrounding ovarian cancer cells into cells that promote tumor growth and metastasis provides potential new therapeutic targets for this deadly disease, according to new research.Wed, 21 Nov 2012 10:44:44 ESThttp://www.sciencedaily.com/releases/2012/11/121121104401.htmhttp://www.sciencedaily.com/releases/2012/11/121120194932.htm A new rapid test for tuberculosis (TB) could substantially and cost-effectively reduce TB deaths and improve treatment in southern Africa -- a region where both HIV and tuberculosis are common.Tue, 20 Nov 2012 19:49:49 ESThttp://www.sciencedaily.com/releases/2012/11/121120194932.htmhttp://www.sciencedaily.com/releases/2012/11/121120194926.htm A new study has identified hundreds of small regions of the genome that appear to be uniquely regulated in human neurons. These regulatory differences distinguish us from other primates, including monkeys and apes, and as neurons are at the core of our unique cognitive abilities, these features may ultimately hold the key to our intellectual prowess (and also to our potential vulnerability to a wide range of 'human-specific' diseases from autism to Alzheimer's).Tue, 20 Nov 2012 19:49:49 ESThttp://www.sciencedaily.com/releases/2012/11/121120194926.htmhttp://www.sciencedaily.com/releases/2012/11/121120132906.htm Rather than target RNA viruses directly, aiming at the host cells they invade could hold promise, but any such strategy would have to be harmless to the host. Now, a surprising discovery made in ribosomes may point the way to fighting fatal viral infections such as rabies.Tue, 20 Nov 2012 13:29:29 ESThttp://www.sciencedaily.com/releases/2012/11/121120132906.htmhttp://www.sciencedaily.com/releases/2012/11/121120121835.htm Microbiologists studying bacterial colonization in mice have discovered how the very rapid and efficient spread of antibiotic resistance works in the respiratory pathogen, Streptococcus pneumoniae (also known as the pneumococcus). The team found that resistance stems from the transfer of DNA between bacterial strains in biofilms in the nasopharynx, the area just behind the nose.Tue, 20 Nov 2012 12:18:18 ESThttp://www.sciencedaily.com/releases/2012/11/121120121835.htmhttp://www.sciencedaily.com/releases/2012/11/121120100155.htm Scientists have discovered another molecule that plays an important role in regulating myelin formation in the central nervous system. Myelin promotes the conduction of nerve cell impulses by forming a sheath around their projections, the so-called axons, at specific locations -- acting like the plastic insulation around a power cord.Tue, 20 Nov 2012 10:01:01 ESThttp://www.sciencedaily.com/releases/2012/11/121120100155.htmhttp://www.sciencedaily.com/releases/2012/11/121120084725.htm Scientists have uncovered evidence that the gene FTO ? the major genetic contributor to obesity ? is associated with an eight per cent reduction in the risk of depression.Tue, 20 Nov 2012 08:47:47 ESThttp://www.sciencedaily.com/releases/2012/11/121120084725.htmhttp://www.sciencedaily.com/releases/2012/11/121119213144.htm Researchers have found that biological age and life expectancy can be predicted by measuring an individual's DNA. They studied the length of chromosome caps -- known as telomeres -- in a 320-strong wild population of Seychelles Warblers on a small isolated island.Mon, 19 Nov 2012 21:31:31 ESThttp://www.sciencedaily.com/releases/2012/11/121119213144.htmhttp://www.sciencedaily.com/releases/2012/11/121119171403.htm Certain mutated cells keep trying to replicate their DNA -- with disastrous results -- even after medications rob them of the raw materials to do so, according to new research.Mon, 19 Nov 2012 17:14:14 ESThttp://www.sciencedaily.com/releases/2012/11/121119171403.htmhttp://www.sciencedaily.com/releases/2012/11/121119163301.htm DNA sequences obtained from a handful of patients with multiple sclerosis have revealed the existence of an ?immune exchange? that allows the disease-causing cells to move in and out of the brain.Mon, 19 Nov 2012 16:33:33 ESThttp://www.sciencedaily.com/releases/2012/11/121119163301.htmhttp://www.sciencedaily.com/releases/2012/11/121119114249.htm A new tool for neuroscientists delivers a thousand pinpricks of light to individual neurons in the brain. The new 3-D "light switch", created by biologists and engineers, could one day be used as a neural prosthesis that could treat conditions such as Parkinson's and epilepsy by using gene therapy to turn individual brain cells on and off with light.Mon, 19 Nov 2012 11:42:42 ESThttp://www.sciencedaily.com/releases/2012/11/121119114249.htmhttp://www.sciencedaily.com/releases/2012/11/121119093848.htm The cerebral cortex is the most complex structure in our brain and the seat of consciousness, emotion, motor control and language. In order to fulfill these functions, it is composed of a diverse array of nerve cells, called cortical neurons, which are affected by many neurological and neuropsychiatric diseases. Researchers have opened new perspectives on brain development and stem cell neurobiology by discovering a gene called BCL6 as a key factor in the generation of cortical neurons during embryonic brain development.Mon, 19 Nov 2012 09:38:38 ESThttp://www.sciencedaily.com/releases/2012/11/121119093848.htmhttp://www.sciencedaily.com/releases/2012/11/121118141530.htm Scientists have demonstrated that induced pluripotent stem cells -- the embryonic-stem-cell look-alikes whose discovery a few years ago won this year's Nobel Prize in medicine -- are not as genetically unstable as was thought.Sun, 18 Nov 2012 14:15:15 ESThttp://www.sciencedaily.com/releases/2012/11/121118141530.htmhttp://www.sciencedaily.com/releases/2012/11/121118141524.htm The prevailing wisdom has been that every cell in the body contains identical DNA. However, a new study of stem cells derived from the skin has found that genetic variations are widespread in the body's tissues, a finding with profound implications for genetic screening.Sun, 18 Nov 2012 14:15:15 ESThttp://www.sciencedaily.com/releases/2012/11/121118141524.htmhttp://www.sciencedaily.com/releases/2012/11/121118141432.htm Geneticists, pediatricians, surgeons and epidemiologists have identified two areas of the human genome associated with the most common form of non-syndromic craniosynostosis premature closure of the bony plates of the skull.Sun, 18 Nov 2012 14:14:14 ESThttp://www.sciencedaily.com/releases/2012/11/121118141432.htmhttp://www.sciencedaily.com/releases/2012/11/121117184658.htm A new discovery concerning a fundamental understanding about how DNA works will produce a "180-degree change in focus" for researchers who study how gene packaging regulates gene activity, including genes that cause cancer and other diseases.Sat, 17 Nov 2012 18:46:46 ESThttp://www.sciencedaily.com/releases/2012/11/121117184658.htmhttp://www.sciencedaily.com/releases/2012/11/121116161059.htm Adverse side effects of certain hepatitis C medications can now be replicated in the lab, thanks to a research team. The new method aids understanding of recent failures of hepatitis C antiviral drugs in some patients, and could help to identify medications that eliminate adverse effects. The findings may aid the development of safer and more effective treatments for hepatitis C and other pathogens such as SARS and West Nile virus.Fri, 16 Nov 2012 16:10:10 ESThttp://www.sciencedaily.com/releases/2012/11/121116161059.htmhttp://www.sciencedaily.com/releases/2012/11/121116124644.htm Researchers have found that a protein, known for causing cancer cells to spread around the body, is also one of the molecules that trigger repair processes in the brain.Fri, 16 Nov 2012 12:46:46 ESThttp://www.sciencedaily.com/releases/2012/11/121116124644.htmhttp://www.sciencedaily.com/releases/2012/11/121116124551.htm New research shows that a gene is responsible for a person's tendency to be an early riser or night owl -- and helps determine the time of day a person is most likely to die.Fri, 16 Nov 2012 12:45:45 ESThttp://www.sciencedaily.com/releases/2012/11/121116124551.htmhttp://www.sciencedaily.com/releases/2012/11/121116091226.htm Insights from a genetic condition that causes brain cancer are helping scientists better understand the most common type of brain tumor in children.Fri, 16 Nov 2012 09:12:12 ESThttp://www.sciencedaily.com/releases/2012/11/121116091226.htmhttp://www.sciencedaily.com/releases/2012/11/121115210541.htm Researchers have pieced together new genetic clues to the arthritis puzzle in a study that brings potential treatments closer to reality and could also provide insights into why more women than men succumb to the disabling condition.Thu, 15 Nov 2012 21:05:05 ESThttp://www.sciencedaily.com/releases/2012/11/121115210541.htmhttp://www.sciencedaily.com/releases/2012/11/121115172255.htm Passing one's genes on to the next generation is a mark of evolutionary success. So it makes sense that the body would work to ensure that the genes the next generation inherits are exact replicas of the originals. Biologists have now identified one way the body does exactly that.Thu, 15 Nov 2012 17:22:22 ESThttp://www.sciencedaily.com/releases/2012/11/121115172255.htmhttp://www.sciencedaily.com/releases/2012/11/121115152655.htm Researchers report that an efficient, high-volume technique for testing potential drug treatments for Alzheimer's disease uncovered an organic compound that restored motor function and longevity to fruit flies with the disease.Thu, 15 Nov 2012 15:26:26 ESThttp://www.sciencedaily.com/releases/2012/11/121115152655.htmhttp://www.sciencedaily.com/releases/2012/11/121115133414.htm For the past several years, research has focused on the intricate actions of an ancient family of catalytic enzymes that play a key role in translation, the process of producing proteins. In a new study, scientists have shown that this enzyme can actually also work in another fundamental process in humans.Thu, 15 Nov 2012 13:34:34 ESThttp://www.sciencedaily.com/releases/2012/11/121115133414.htmhttp://www.sciencedaily.com/releases/2012/11/121115133312.htm Researchers have discovered that tanshinones, which come from the plant Danshen and are highly valued in Chinese traditional medicine, protect against the life-threatening condition sepsis.Thu, 15 Nov 2012 13:33:33 ESThttp://www.sciencedaily.com/releases/2012/11/121115133312.htmhttp://www.sciencedaily.com/releases/2012/11/121115132903.htm Medical researchers have for the first time described the structure of the active site core of topoisomerase II alpha, an important target for anti-cancer drugs. The type II topoisomerases are important enzymes that are involved in maintaining the structure of DNA and chromosome segregation during both replication and transcription of DNA. One of these enzymes, topoisomerase II alpha, is involved in the replication of DNA and cell proliferation, and is highly expressed in rapidly dividing cancer cells.Thu, 15 Nov 2012 13:29:29 ESThttp://www.sciencedaily.com/releases/2012/11/121115132903.htmhttp://www.sciencedaily.com/releases/2012/11/121115132901.htm Enzyme hunters at UiO have discovered the function of an enzyme that is important in the spreading of cancer. Cancer researchers now hope to inhibit the enzyme.Thu, 15 Nov 2012 13:29:29 ESThttp://www.sciencedaily.com/releases/2012/11/121115132901.htmhttp://www.sciencedaily.com/releases/2012/11/121115132613.htm New research has revealed a genetic link in pregnant moms - and their male partners - to pre-eclampsia, a life-threatening complication during pregnancy.Thu, 15 Nov 2012 13:26:26 ESThttp://www.sciencedaily.com/releases/2012/11/121115132613.htmhttp://www.sciencedaily.com/releases/2012/11/121115132344.htm Thanks to some careful detective work, scientist better understand just how iPS cells form ? and why the Yamanaka process is inefficient, an important step to work out for regenerative medicine. The findings uncover cellular impediments to iPS cell development that, if overcome, could dramatically improve the efficiency and speed of iPS cell generation.Thu, 15 Nov 2012 13:23:23 ESThttp://www.sciencedaily.com/releases/2012/11/121115132344.htmhttp://www.sciencedaily.com/releases/2012/11/121115132342.htm About 10 percent of kids born with kidney defects have large alterations in their genomes known to be linked with neurodevelopmental delay and mental illness, a new study has shown.Thu, 15 Nov 2012 13:23:23 ESThttp://www.sciencedaily.com/releases/2012/11/121115132342.htmhttp://www.sciencedaily.com/releases/2012/11/121114172833.htm Relatively small levels of exposure to alcohol while in the womb can influence a child's IQ, according to a new study using data from over 4,000 mothers and their children.Wed, 14 Nov 2012 17:28:28 ESThttp://www.sciencedaily.com/releases/2012/11/121114172833.htmhttp://www.sciencedaily.com/releases/2012/11/121114171710.htm A gene so powerful it nearly triples the risk of Alzheimer's disease has been discovered by an international team of researchers. It is the most potent genetic risk factor for Alzheimer's identified in the past 20 years.Wed, 14 Nov 2012 17:17:17 ESThttp://www.sciencedaily.com/releases/2012/11/121114171710.htmhttp://www.sciencedaily.com/releases/2012/11/121114171708.htm For the first time, researchers have landed on a potential diagnostic method to identify at least a subset of patients with chronic fatigue syndrome - testing for antibodies linked to latent Epstein-Barr virus reactivation.Wed, 14 Nov 2012 17:17:17 ESThttp://www.sciencedaily.com/releases/2012/11/121114171708.htmhttp://www.sciencedaily.com/releases/2012/11/121114153227.htm In laboratory experiments, scientists have eliminated metastasis, the spread of cancer from the original tumor to other parts of the body, in melanoma by inhibiting a protein known as melanoma differentiation associated gene-9 (mda-9)/syntenin.Wed, 14 Nov 2012 15:32:32 ESThttp://www.sciencedaily.com/releases/2012/11/121114153227.htmhttp://www.sciencedaily.com/releases/2012/11/121114134512.htm Researchers provide a whole-genome sequence and analysis of number of pig breeds, including a miniature pig that serves a model for human medical studies and therapeutic drug testing.Wed, 14 Nov 2012 13:45:45 ESThttp://www.sciencedaily.com/releases/2012/11/121114134512.htmhttp://www.sciencedaily.com/releases/2012/11/121114134054.htm Caterpillar fungi are rare parasites found on hibernating caterpillars in the mountains of Tibet. For centuries they have been highly prized as a traditional Chinese medicine - just a small amount can fetch hundreds of dollars.Wed, 14 Nov 2012 13:40:40 ESThttp://www.sciencedaily.com/releases/2012/11/121114134054.htmhttp://www.sciencedaily.com/releases/2012/11/121114113803.htm There are plenty of effective anticancer agents around. The problem is that, very often, they cannot gain access to all the cells in solid tumors. A new gene delivery vehicle may provide a way of making tracks to the heart of the target.Wed, 14 Nov 2012 11:38:38 ESThttp://www.sciencedaily.com/releases/2012/11/121114113803.htmhttp://www.sciencedaily.com/releases/2012/11/121114113235.htm New research has uncovered the cause of infertility for 80 per cent of couples previously diagnosed with 'unexplained infertility': high sperm DNA damage.Wed, 14 Nov 2012 11:32:32 ESThttp://www.sciencedaily.com/releases/2012/11/121114113235.htmhttp://www.sciencedaily.com/releases/2012/11/121114083928.htm The ability of cannabis to produce psychosis has long been an important public health concern. This concern is growing in importance as there is emerging data that cannabis exposure during adolescence may increase the risk of developing schizophrenia, a serious psychotic disorder. Further, with the advent of medical marijuana, a new group of people with uncertain psychosis risk may be exposed to cannabis.Wed, 14 Nov 2012 08:39:39 ESThttp://www.sciencedaily.com/releases/2012/11/121114083928.htmhttp://www.sciencedaily.com/releases/2012/11/121113214635.htm For the first time, researchers have used DNA sequencing to help bring an infectious disease outbreak in a hospital to a close. Researchers used advanced DNA sequencing technologies to confirm the presence of an ongoing outbreak of methicillin-resistant Staphylococcus aureus (MRSA) in a Special Care Baby Unit in real time. This assisted in stopping the outbreak earlier, saving possible harm to patients. This approach is much more accurate than current methods used to detect hospital outbreaks.Tue, 13 Nov 2012 21:46:46 ESThttp://www.sciencedaily.com/releases/2012/11/121113214635.htmhttp://www.sciencedaily.com/releases/2012/11/121113161506.htm Findings from a study suggest that certain variations in vitamin D metabolism genes may modify the association of low serum 25-hydroxyvitamin D concentrations with health outcomes such as hip fracture, heart attack, cancer, and death.Tue, 13 Nov 2012 16:15:15 ESThttp://www.sciencedaily.com/releases/2012/11/121113161506.htmhttp://www.sciencedaily.com/releases/2012/11/121113143656.htm Biologists have discovered that fats within cells store a class of proteins with potent antibacterial activity, revealing a previously unknown type of immune system response that targets and kills bacterial infections.Tue, 13 Nov 2012 14:36:36 ESThttp://www.sciencedaily.com/releases/2012/11/121113143656.htmhttp://www.sciencedaily.com/releases/2012/11/121113134807.htm Researchers using a new approach to identifying genes associated with depression have found that variants in a group of genes involved in transmission of signals by the neurotransmitter glutamate appear to increase the risk of depression.Tue, 13 Nov 2012 13:48:48 ESThttp://www.sciencedaily.com/releases/2012/11/121113134807.htmhttp://www.sciencedaily.com/releases/2012/11/121113134230.htm The cancer-causing form of the gene Myc alters the metabolism of mitochondria, the cell?s powerhouse, making it dependent on the amino acid glutamine for survival. Depriving cells of glutamine selectively induces programmed cell death in cells overexpressing mutant Myc. Using Myc-active neuroblastoma cells, a team three priotein executors of the glutamine-starved cell, representing a downstream target at which to aim drugs. Roughly 25 percent of all neuroblastoma cases are associated with Myc-active cells.Tue, 13 Nov 2012 13:42:42 ESThttp://www.sciencedaily.com/releases/2012/11/121113134230.htmhttp://www.sciencedaily.com/releases/2012/11/121113134224.htm Even the very lowest levels of radiation are harmful to life, scientists have concluded, reporting the results of a wide-ranging analysis of 46 peer-reviewed studies published over the past 40 years. Variation in low-level, natural background radiation was found to have small, but highly statistically significant, negative effects on DNA as well as several measures of health.Tue, 13 Nov 2012 13:42:42 ESThttp://www.sciencedaily.com/releases/2012/11/121113134224.htmhttp://www.sciencedaily.com/releases/2012/11/121113122220.htm Scientists have discovered a new gene that regulates heme synthesis in red blood cell formation. Heme is the deep-red, iron-containing component of hemoglobin, the protein in red blood cells responsible for transporting oxygen in the blood. The findings promise to advance the biomedical community's understanding and treatment of human anemias and mitochondrial diseases, both known and unknown.Tue, 13 Nov 2012 12:22:22 ESThttp://www.sciencedaily.com/releases/2012/11/121113122220.htmhttp://www.sciencedaily.com/releases/2012/11/121113122133.htm Researchers have tracked a gene's crucial role in orchestrating the placement of neurons in the developing brain. Their findings help unravel some of the mysteries of Joubert syndrome and other neurological disorders.Tue, 13 Nov 2012 12:21:21 ESThttp://www.sciencedaily.com/releases/2012/11/121113122133.htmhttp://www.sciencedaily.com/releases/2012/11/121113091953.htm Why do we get older? When do we die and why? Is there a life without aging? For centuries, science has been fascinated by these questions. Now researchers have examined why the polyp Hydra is immortal -- and unexpectedly discovered a link to aging in humans.Tue, 13 Nov 2012 09:19:19 ESThttp://www.sciencedaily.com/releases/2012/11/121113091953.htm

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