Tag: "distinct" at biology news
New data on ant adaptability within their environment
...erent environments. Many ants have morphologically distinct
"castes," such as workers and soldiers, that speci... populations of P. morrisi in three geographically distinct
sites in the eastern United States. The differing population characteristics persisted when the ants...
Ribozyme package effective against hepatitis B virus
...vity. In addition, Clawson's cassette included two distinct
trans-acting ribozymes, whereas previous versions included only one. With two trans-acting hammerhead ribozymes in the SNIPAA cassette, twice the amount of "medicine" was present and was delivered over a longer period. ...
Tigers: Big cats need cat food
...ling tiger and prey populations in 11 ecologically distinct
sites in India from grasslands to dry forests over an eight-year period, with teams of biologists walking more than 4,200 miles to count prey animals, and setting hundreds of camera traps over 8,600 days of effort. Densities of ungulate prey such ...
Rockefeller University scientists take on controversial 'vibration theory' of smell
...vibration frequency that the nose can interpret as distinct
smells. The reigning theory of smell, which also ...ill mysterious process, leads to the perception of distinct
odors. But the problem with the shape theory is that humans have only 347 different odorant receptor...
Experiments establish 'protein-only' nature of prion infections
...at different temperatures propagated themselves as distinct
strains -- providing templates for the folding of ...that the ability to generate, manipulate and study distinct
prion strains in yeast should lead to more detailed studies of how amyloid proteins form and propaga...
'Protein-only' prions confirmed in FSU yeast study
...odel, Weissman's group isolated and identified two distinct
yeast prion strains caused by "protein-only" prions. Collectively, the research helps resolve the most puzzling question in prion research, King said. Since prions were first hypothesized in 1982 by Stanley Prusiner, aprofessor at UCSF, the curiou...
JCI table of contents, 15 March 2004
...ney disease (ARPKD) are caused by mutations in two distinct
genes, HNF1-beta and PKHD1, respectively. Both diseases affect the kidney and result in renal cystogenesis. In the March 15 issue of the Journal of Clinical Investigation, Peter Igarashi and colleagues, from the University of Texas Southwestern, have...
New approach limits damage after heart attack and improves survival, say Scripps Research scientists
...r how groups of cells form and define functionally distinct
tissues and organs in the body. Blood vessels are lined by what are known as endothelial cells, which adhere to one another and line the body's blood vessels like bricks lining a subterranean tunnel. Through the work of Cheresh and other basic sci...
Gene variants may increase susceptibility to type 2 diabetes
... 2004 -- International research teams studying two distinct
populations have found variants in a gene that may predispose people to type 2 diabetes, the most common form of the disease. The researchers, who collaborated extensively in their work, report their findings in companion articles in the April issue...
New test detects cirrhosis of the liver in an early stage
...s can evolve rapidly or slowly. There are several distinct
stages. One of the final stages is cirrhosis of the liver. When a patient develops cirrhosis, the chance of liver cancer rises sharply (25 to 40 times higher than normal) and in a very advanced stage the liver is no longer able to function. The on...
Design of composite materials that detect terahertz discovered
...nd bioterror agents, like anthrax happen to have a distinct
absorption in the terahertz range, and since terahertz can penetrate clothing, it is also of interest for airport screening of weapons and explosives. Terahertz rays could also help pilots guide airplanes in foggy weather because water doesn't scatte...
U Iowa study identifies damaging mechanism in transplants and heart attacks
...wever, the UI researchers found that there are two distinct
pathways for the two different types of injury. "Important health implications have emerged from these studies, which may aid us in treating environmental injuries that have both ischemic and inflammatory components. We can now selectively remove, l...
Researchers discover new family of Atlantic corals in groundbreaking study
...s, which had been conventionally classified in two distinct
families found around the tropics, in fact are ver...act, the researchers found the Atlantic corals are distinct
enough to constitute their own family, the first such high-level grouping unique to the Atlantic. Se...
Seeking a mechanical solution to nation's number-one children's illness
...es to apply his models to each of the six or seven distinct
"patient populations" identified by doctors as having eustachian tubes that, for differing reasons, resist opening. By learning why the tube does not open in a specific group, he says, researchers believe they can fashion a solution for that particul...
Sophisticated silencing strategies
...at plants have evolved multiple systems to produce distinct
classes of small RNAs with specialized functions. These include genome maintenance, the regulation of specific endogenous target genes, and defense against viral and transposon sequences. These results shed light on the evolution of RNA-mediated gene...
Pioneer in the genetics of programmed cell death honored
...ently, in the last two years, Korsmeyer identified distinct
roles for BCL-2 members. His rigorous analysis of these novel proteins established a mammalian apoptotic pathway and placed multiple landmarks along its course. A native of Beardstown, Ill., Korsmeyer received both his undergraduate and medical d...
Molecular mechanisms that trigger flowering in spring
...wn. The analysis of CONSTANS has also demonstrated distinct
layers of regulation that were not foreseen by the...ock regulated transcription and antagonism between distinct
photoreceptors, some of which target the protein for degradation in the morning and others that stab...
Special training may help people with autism recognize faces
...d a professor of psychology. "We have special and distinct
regions for perceiving faces and others for perceiving objects. These regions are located in different parts of the temporal lobe. Our brain imaging studies are finding that people with autism often use object processing areas when they are looking ...
'We are the champions' the new birdie song
...f a pair often sing duets, with each bird having a distinct
part. German researchers Ulmar Grafe and Johannes Bitz visited the Como National Park in Ivory Coast to find out how tropical boubous respond to their territory being invaded. The researchers broadcast recordings of four duets, which are often sung ...
Natural killer cellers are made, not born
...sentinel dendritic cells) before they react in two distinct
modes. In one mode, they promptly secrete cytokine...a on the activation of natural killer cells, their distinct
functions in the body and their cellular targets, are helping to move the study of natural killer ce...
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