reason 2 3

Tag: "reason" at biology news

Amur leopard still on the brink of extinction, scientists say

...duce and nourish their cubs. "Maybe this is the reason why leopards practically completely disappeared from the Korean Peninsula and north-east China," said Dr. Pikunov. "At the beginning of the past century, the Far Eastern leopard was a common species in the southern parts of Sikhote-Alin and in some K...

Mosquito repellents that emit high-pitched sounds don't prevent bites

...rk. The researchers therefore say that there is no reason for recommending their use, and that there is no reason for even trying to do more research with the devices. Malaria is transmitted when a person is bitte...

Custom-made cancer cell attacks

...s of land into Miscanthus production. The main reason behind the call for increased biofuel production is to reduce emissions of greenhouse gases, not because we are running out of fossil fuels, he added. ''There are reserves of coal for 200 years at least, and coal can be liquefied into fuel, but it pr...

Cellulosic ethanol: Fuel of the future?

...s of land into Miscanthus production. The main reason behind the call for increased biofuel production is to reduce emissions of greenhouse gases, not because we are running out of fossil fuels, he added. ''There are reserves of coal for 200 years at least, and coal can be liquefied into fuel, but it pr...

Lead with a poisonous electron shield

...zinc, it only binds to the three sulfur atoms. The reason for this is the emerging free electron pair of the lead cation. It acts as an electronic shield on one side, pushing away the fourth ligand. Such a dramatic geometrical distortion at the active center could explain why lead inhibits this enzyme. T...

Long-lived deep-sea fishes imperiled by technology, overfishing

...et schools of fish or seamounts with ease. "One reason that many of these fish species were fished sustainably in the past is that we couldn't fish all of the places all of the time," Heppell said. "That isn't necessarily true anymore." Heppell is a faculty member in the Department of Fisheries and Wi...

Tears reveal some of their deepest secrets to researchers

...ere for a reason, but we're not sure yet what that reason is." Nichols and her team are currently studying the role of oleamide in cellular signaling and communication in the eye, along with the role that the lipid may play in dry eye. "Dry eye is really a disorder of symptoms that irritate the eyes,"...

Leukemic cells find safe haven in bone marrow

...s protective niche of the bone marrow might be the reason that leukemia recurs in some children who have been treated with this drug," said Dario Campana, M.D., Ph.D., a member of the St. Jude Oncology and Pathology departments. Campana is senior author of the report that appears in the online pre-publi...

MicroRNA helps prevent tumors

...y focused on the shortened protein as the possible reason that the cells with this DNA swap became tumors. But this DNA swap removes not only the gene's protein-producing regions but also those areas that don't code for protein. And these non-protein-producing regions contain the elements that microRNAs re...

Baby fish 'smell their way home'

...ey role in the emergence of new species is a fresh reason to take even greater care in how we look after them." ...

New culture method for hepatitis C virus uses primary hepatocytes and patient serum

... hepatocellular carcinoma, represents the foremost reason for liver transplantation in much of the U.S. Study of HCV replication within liver cells, or hepatocytes, has been hampered by a lack of adequate virus culture systems. Some systems allow the virus to infect cells but do not permit prolonged rep...

Plants do not emit methane

... these plant specialists conclude that there is no reason to reassess the mitigation potential of plants. The researchers stress that questions still remain and that the gap in the global methane budget needs to be properly addressed. ...

Turning a cellular sentinel into a cancer killer

...ald DePinho wrote that "these three papers provide reason for cautious optimism that reactivation of p53, and possibly of other tumour-suppressor genes, might be useful in treating certain cancers." However, they noted that Evan and his colleagues had seen rapid appearance of tumors that progressed despite ...

Anti-fungal drug stops blood vessel growth

... but the researchers aren’t positive if that’s the reason blood vessels stop growing, because related antifungal drugs had much lower inhibitory effect. “Our screening test did show that cholesterol-lowering statins also appear to stop blood vessel growth,?Liu says, “so there is likely some important co...

Stem cell therapy shows promise in regenerating damaged muscle in heart attack patients

... Rush Cardiac Catheterization Laboratory, says one reason the study results are so promising is that these stem cells can be used without tissue typing and do not trigger an immune response, and are available for every patient. The mesenchymal stem cells (MSC) are found in the adult bone marrow and have ...

Swimming 'to the left' gets bacteria upstream, and may promote infection

...and how bacteria propel themselves report that one reason for the high incidence of infections associated with catheters in hospital patients may be that some pathogenic bacteria swim "to the left," in a study published in Physical Review Letters. "Escherichia coli (E. coli) and some other pathogenic bac...

New test helps identify hepatitis C patients at high risk of developing cirrhosis

... failure. Hepatitis C infection is the most common reason people need a liver transplant in the United States and is responsible for between 8,000 and 10,000 U.S. deaths annually. But in the majority of people chronically infected with hepatitis C, the virus causes either no symptoms or vague, nonspec...

Genes and genius: Researchers confirm association between gene and intelligence

...ou're particularly good with puzzles or chess, the reason may be in your genes. A team of scientists, led by psychiatric geneticists at Washington University School of Medicine in St. Louis, has gathered the most extensive evidence to date that a gene that activates signaling pathways in the brain influen...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...en mothers and daughters. "We didn't know if the reason that the babies grew up to be abusive was that they watched how their mothers parented and repeated their behavior or whether their early experience produced long-term changes in brain processes that regulate emotions. We also noticed that about hal...

How fish mend a broken heart

...tivate such a cardiogenic environment is a primary reason why zebrafish, as opposed to other laboratory models, effectively regenerate [heart muscle]," the researchers concluded. Indeed, they added, mammalian hearts typically show insufficient blood vessel growth after a heart attack. "Experimental attemp...

1 2 3 4 5 6 7 8 9 10