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Tag: "exist" at biology news

Hydrogen and methane provide raw energy for life at 'Lost City'

...st City, Kelley says she's 100 percent sure others exist because there are so many other places mantle rock has been thrust up through the seafloor, exposing it to seawater and serpentinization. Even more such rocks were present on early Earth, Kelley says. "We don't, in most places, have access to early...

Stealth Worms May Improve Insect Pest Control

...ns in biology." Given the number of nematodes that exist in the world, the possibilities for discovery are immense. "The whole nematode phylum is estimated to have 500,000 to a million species. About 25,000 species have been identified so far," Stock says. ...

Breakthrough isolating embryo-quality stem cells from blood

...cientists have known for some time that stem cells exist in adult human blood and certain other tissues. However the only reliable way to separate them involved marking the cells with a chemical dye, rendering them useless for medical purposes. Professor Käs' technique for the first time uses a physical ch...

Gladstone investigators discover how resting T cells avoid HIV infection

...ghly 95 percent of CD4 T cells in the blood stream exist in a resting, inactive state, awaiting the appearance of their specific antigen. When they detect its presence, they spring into action -- growing and dividing, releasing cytokines (proteins that the immune system uses to communicate between cells) a...

Study uncovers bacteria's worst enemy

...dionuclides, organic chemicals and metal regularly exist at many nuclear sites. Based on the results of this study, if bioremediation is to be effective at these types of sites, the operative microorganisms must be able to grow, function and do better than other bacteria in the presence of all kinds of con...

Putting ecology back into river restoration

...scribing the ecologically healthy river that could exist at a given site. The second step should be to demonstrate that there have been measurable changes towards the guiding image, such as larger fish populations and clearer water. Palmer et al stress that restoration success should not be viewed as an al...

Protein Discovery Could Unlock The Secret To Better TB Treatment

...ing factor (Rpf). Five versions of the Rpf protein exist in TB bacteria. The paper's unveiling of the molecular structure of Rpf could be crucial to the treatment of TB in the future. Dr John Ward, Dept of Biochemistry and Molecular Biology at UCL, said: "The discovery of Rpf in the TB bacteria could allo...

Researchers discover underwater volcano

...after the ferocious Samoan goddess of war, did not exist just fours years ago, according to co-chief scientists Hubert Staudigel, a geologist at Scripps's Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics, and Stan Hart, a geochemist at Woods Hole Oceanographic Institution. With a gro...

Same-Sex Mating Discovered in a Toxic Fungus

...lso of Duke. "Organisms, including fungi, usually exist in an approximately one-to-one sex ratio," Lin said. "Yet in Cryptococcus neoformans, one mating type predominates, leaving them with apparently few chances to mate. It's been a mystery." In 1996, another group discovered that those alpha isolates c...

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

... resources is especially tragic because strategies exist that could be used to ensure wider access to effective cancer treatment, according to Raul C. Ribeiro, M.D., director of the St. Jude International Outreach Program and another co-author of the editorial. The authors note that one of the most effecti...

Navigating an integrated yeast network

...sands of physical and functional interactions that exist within all cells can begin to be untangled to provide [the] basis for detailed network reconstruction and to elucidate fundamental organizational principles of biological networks." This press release is based on the following article: Motifs, the...

U-M team recovers ancient whale in Egyptian desert

...d like science fiction, dozens of documented cases exist of humans surviving prolonged hibernation-like states with no lingering physical or neurological damage. For example: * In May 1999, a female Norwegian skier was rescued after submersion in icy water for more than an hour. When rescued she was clini...

Buying Time Through Hibernation on Demand

...d like science fiction, dozens of documented cases exist of humans surviving prolonged hibernation-like states with no lingering physical or neurological damage. For example: * In May 1999, a female Norwegian skier was rescued after submersion in icy water for more than an hour. When rescued she was clini...

Microbial forensics: The next great forensic challenge

...by bioterrorism, including that numerous pathogens exist in nature and do not necessarily require sophistic...dversaries to escape; effective treatments may not exist for many agents; numerous unprotected agricultural targets exist; and the availability of basic know...

Researchers identify protein crucial for survival of Lyme-disease bacterium

...genes important to its survival there. If it can't exist in ticks, it can't maintain itself in nature and hence can't infect animals or humans." UT Southwestern molecular microbiology graduate student Andrew Revel, a lead author of the study, found the bptA gene by screening a number of candidate genes he...

Biodiversity hotspots identify conservation priorities

...r plants and 42 percent of terrestrial vertebrates exist only in these 34 hotspots. The Madrean Pine-Oak Woodlands, a rugged, mountainous area stretching from Mexico to the Southwestern United States, is one of nine newly identified hotspots. Three other hotspots that extend into U.S. states or territorie...

PGA on a tour under the skin

...r than Bacillus anthracis, but several differences exist in how the two pathogens use PGA to their advantage. PGA is currently used as an antigen for vaccine production against Anthrax This paper presents PGA as a promising target for drug development aimed at combating these hospital-acquired infections ...

Family trees of ancient bacteria reveal evolutionary moves

...ter systems on continents and gradually evolved to exist in brackish water environments, then higher salt ones, marine and hyper saline (salt crust) environments. Cyanobacteria are organisms that gave rise to chloroplasts, the oxygen factory in plant cells. A half billion years ago Cyanobacteria predated ...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

... oral pathogens to determine what interactions may exist that contribute to infection, he said. “This study is important in that we now have an understanding of the protein expression on a global scale for this pathogen,?Lamont said. “Now we need to see how it adapts to various situations present in the m...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...to identify and effectively use the synergies that exist in the natural environment, a systematic approach to environmental decision making and management is urgently needed. The Interlinkages approach offers a coordinated way to achieve this goal," the analysis says. "Because of the transboundary nature ...

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