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Tag: "reservoir" at biology news

Newly-discovered class of genes determines ?and restricts ?stem cell fate

...ied in many types of organs and may be a potential reservoir for tissue regeneration. A fundamental understanding of the molecular programs that regulate stem-cell differentiation is necessary for harnessing this potential. ### This work was supported by grants from the National Institutes of Health. Epstein...

The secret lives of whales

... fall fauna. “The deep ocean appears to be a major reservoir of biodiversity on the planet. Some of the oddest animals ever discovered occur on whale falls,?says Smith. “These communities are the undertakers of the deep, assimilating huge whale carcasses and recycling their bodies back into oceanic lifecycles....

Jefferson Virologists Coax HIV Out of Hiding

... suspectssuch strains may be from an unknown viral reservoir in the blood. “IL-7may teach us something,?he says...ected. We think we’ve found a new population, anew reservoir of HIV that has not been seen before. It’s probably asub-population of blood cells, lymphocytes not ...

Spider Venom Could Yield Eco-Friendly Insecticides

...er species yet to be studied represent an untapped reservoir of diverse insecticidal compounds that could do more than control agricultural pests. As researchers inventory more kinds of venom and uncover insecticide leads, they may be able to target insects that transmit new and emerging human diseases, such a...

Scientists discover the cellular roots of graying hair

...e gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanocytes, that give hairits youthful hues. Not only do the non-specialized stem cells becomedepleted, they also progressively make errors, turning into fullycommitted pigmen...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...e gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanocytes, that give hairits youthful hues. Not only do the non-specialized stem cells becomedepleted, they also progressively make errors, turning into fullycommitted pigmen...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...e gradual dying off ofadult stem cells that form a reservoir that spawns a continuous supplyof new pigment-manufacturing cells, called melanocytes, that give hairits youthful hues. Not only do the non-specialized stem cells becomedepleted, they also progressively make errors, turning into fullycommitted pigmen...

New SARS Protein Linked To Important Cell Doorway

...S virus first jumped from its still unknown animal reservoir to humans in late 2002, it caused approximately 800 deaths and 8,000 infections in several Asian countries. Months before SARS became available for direct study, Washington University researchers used the SARS genome, finished a mere half-year after ...

Tiny scaffolding allows stem cells to become working fat cells

...ids, from the bloodstream. They also become a huge reservoir for glucose as well, and play a role in insulins ability to effectively convert glucose into energy. "If we could learn how to control fat formation in the body, then we could keep people leaner, lowering their chances of becoming insulin-dependent,...

Reservoirs may accelerate the spread of invasive aquatic species, researchers say

...spread of invasive species. The authors note that reservoir construction often leads to many-fold increases in the area of standing water in a region and that reservoirs typically replace varied stream habitats with habitats more similar to each other. Compared to natural lakes, reservoirs are usually shallow...

Ebola virus: from wildlife to dogs

...le is not restricted just to transmission from the reservoir to the non-human primate and then to humans. It is quite possible that several reservoir species co-existent and that many other animal species can become infected, thus contributing to pro...

Study shows eutrophic lakes may not recover for a millennium

...ply phosphorus fertilizers, even when soils have a reservoir of the nutrient. The biggest help, Carpenter says, would come from reducing soil erosion rates. However, developing larger buffers around lakes and streams, restoring wetlands and encouraging the use of new manure storage and handling processes are ...

Visceral Leishmaniasis: Successful Vaccine Trial In Dogs

...n is hit heavily by infection. It acts as parasite reservoir for humans. Development of a vaccine for dogs coul...y visceral leishmaniasis. These animals are thus a reservoir for these parasites, which continuously feed the mammal-sand fly-human cycle. In this context, devel...

Sangamo BioSciences demonstrates its ZFP treatment protects cells from HIV infection

...otentially provide HIV-infected individuals with a reservoir of healthy and uninfectable T-cells that would be available to fight both opportunistic infections and HIV itself. In this program, we have been working in close collaboration with Dr. Carl June at the University of Pennsylvania with the goal of ini...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

... deposited in a former lake bed now exposed near a reservoir outside Puebla. Its dating techniques returned a date of 40,000 years ago, in contrast to the oldest accepted human fossil from the Americas, an 11,500-year-old skull. This makes the rock "one of the most important areas in the study of early human o...

There's something fishy about human brain evolution

...mand, human babies are born with a built-in energy reservoir ?that cute baby fat. Human infants are the only primate babies born with excess fat. It accounts for about 14 per cent of their birth weight, similar to that of their brains. It's this baby fat, says Dr. Cunnane, that provided the physiological win...

Ocean virus identified in human blood samples

...ironment is "a relatively under-explored potential reservoir of human pathogens," the researchers said in their study. History suggests these viruses have rarely been confined to the ocean. A costly Vesivirus epidemic in hogs first was identified in 1932, and was found to be linked to uncooked fish and pork s...

Experimental TB drug effective against resistant and latent mycobacterium tuberculosis

...ed. "The latently infected represent an enormous reservoir for future outbreaks. Existing drugs are ineffective at targeting latent infection. In laboratory assays our compound is lethal to latently adapted Mycobacterium tuberculosis," says Parrish. The researchers are currently undertaking animal experi...

How can we protect patients with weakened immune systems from influenza?

...eople with healthier immune systems, they may be a reservoir for the disease. In addition to the yearly toll of ordinary influenza (as many as 36,000 annual fatalities in the U.S.), added concerns over potential threats -- an avian flu pandemic or the use of flu as a weapon of biological warfare -- put anti-fl...

Contaminants linked to sturgeon decline in Columbia river

...lle. The contamination was most significant in the reservoir behind the Bonneville Dam, the oldest dam on the r...point this is a hypothesis. "Fish residing in the reservoir behind the oldest dam had the highest contaminant loads," Feist added, "and exhibited reduced growth...

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