Tag: "unknown" at biology news
Commandeering cellular machinery: recognition mechanism to detect small molecules
...rent compound, could be used to quickly analyze an unknown
agent. A sensor array might also be used in a hospital emergency room to rapidly test for chemical agents in the blood of an unconscious patient. "If we could take the receptors, express them and put them into a device where there is a color change ...
Endangered frogs coexist with fungus once thought fatal
...y culprit but, in 1996, it was suggested that some unknown
disease had spread through the populations. In 1998, the fungus Batrachochytrium dendrobatidis was identified from sick and dead frogs and, since then, several lines of laboratory based evidence have suggested that B. dendrobatidis is to blame fo...
How roots control plant shoots
...als part of the answer, and indicates a previously unknown
plant hormone a chemical probably made from carot...ng. Earlier studies show that during drought, "an unknown
signal comes from the root and restricts leaf growth," Sieburth says. Plants with mutant bps1 in t...
Talented sniffer: A receptor known for guiding sperm to egg plays a role in the nose
... dual capacity marks a functional range previously unknown
for mammalian olfactory receptor proteins. Having sperm successfully locate the egg is a crucial step in fertilization. Recent evidence had shown that hOR17-4, a human olfactory receptor protein that is unconventionally expressed on sperm cells, app...
Biologists ID molecular block for social 'cheaters'
...eve the absence of dimA may be interfering with an unknown
recognition pathway that is essential for spore selection." The results are the first published by a unique Rice-Baylor collaborative that won $5 million from the National Science Foundation last year to apply the latest techniques of modern molecula...
UCR researchers identify key plant enzyme that defends against multiple infections
...ant discovery because it demonstrates a previously unknown
mechanism through which plants control cell death. "Programmed cell death is a universal process that all multicellular organisms must control throughout growth and development," explained Raikhel. "Since PCD plays such a central role in a wide varie...
New method identifies chromosome changes in malignant cells
...uman breast cancer cells and found many previously unknown
additions and deletions. The results support an idea proposed by some biologists that chromosome additions and deletions are more common than previously believed. "If a cell really wants to change its behavior drastically -- if it is a cancer cell o...
Australian expertise helps resurrect Iraq's ancient marshlands
...lation for Dr Fitzpatrick. He explored a landscape unknown
to soil science. "We ended up finding a whole range of new minerals, new processes going on in the system quite seriously I'm overwhelmed by it all," Dr Fitzpatrick says. "New criteria, based on properties defined in this study, will need to be sub...
Arctic mystery no longer: Dinosaurs walked Canada's great north
... Redpath Museum, is most interested in discovering unknown
species. Of particular interest are archosaurian r...tologist Paul Sereno led to the discovery of eight unknown
dinosaur species and five new crocodile species. Read more on Larsson at www.mcgill.ca/reporter/35/...
Purdue chemists give an old laboratory 'bloodhound' a sharper nose
...ility to provide information on the composition of unknown
substances. Mass spectrometers, essential tools in...g environments than the laboratory. "Testing an unknown
sample using standard mass spec can take up to half a day," said Gologan, a graduate student in Cook...
Excess dietary fat accelerates breast cancer by altering the activity of a group of genes
... identified four genes, one which has a completely unknown
function, whose expression may be involved in this...d the fourth of which is a sequence with a totally unknown
function (known as EST Rn.32385), thereby accelerating the proliferation of tumours. The scienti...
An old adage about apples finds scientific backing
... Raul said these experiments revealed a previously unknown
way in which polyphenol polymers (procyanidins) worked to destroy cancer cells, suggesting such knowledge might be used to one day combat specific tumor growth, such as colon cancer. "For now, our work suggests that eating the whole apple,...
New genomic method can identify disease-causing genes
...hnique also has the potential to uncover currently unknown
genetic factors contributing to a host of different diseases. Roche scientists first published a computational method for mouse genome analysis in the June 8, 2001 issue of Science. That method predicted regions of a mouse chromosome responsibl...
NIH funds rare childhood disease to provide insights into the origins of adult cancer
...months of life, DBA is a genetic blood disorder of unknown
origin that has been diagnosed in only about 1,000 people worldwide. Through the registry, researchers have already discovered that about 50 percent of DBA patients have at least one birth defect and that there is an increased risk for cancer later i...
VYTORIN (TM) superior again to Lipitor at lowering LDL (bad) cholesterol
...nd periodically during the first year. Due to the unknown
effects of increased exposure to ezetimibe (an ingredient in VYTORIN) in patients with moderate or severe hepatic insufficiency, VYTORIN is not recommended in these patients. The safety and effectiveness of VYTORIN with fibrates have not been establ...
Researchers unlock mysteries of toxic metals in the largest contaminated site in United States
...er compounds in the soil, streams, and rivers were unknown
until Virginia Tech professor of geosciences Michael Hochella went all the way to the University of Munster, Germany as a Fulbright Scholar, then as a Humboldt Fellow, to use sophisticated equipment that allowed him to examine lead, arsenic and other...
Scientists raise concerns about second wave of 'mad cow' prion infection
... a new wave of vCJD infections around the world of unknown
magnitude. These concerns were echoed by the panelists, who noted the increase of vCJD in France from six to eight cases in just the past few months and the news that blood from a vCJD-infected donor was transfused to 10 people and used to manufactur...
New Royal Society journal studies
...onflict over reproduction between workers using an unknown
mechanism to recognize the origin of eggs is important for the regulation of worker reproduction in primitively eusocial stage rather than self constraint. Contact: Dr Koji Tsuchida, Laboratory of Entomology, Gifu University, Yanagido 1-1, GIFU, 501 ...
Old riverbed keeps chemicals from entering Ohio River
...emical waste sites. It also indicates a previously unknown
interaction between an underground aquifer and the nearby Ohio River. Beneath sand and gravel on the grounds of Barium and Chemical Inc. in Steubenville, OH, lies an aquifer that contains chemicals such as nitrate and barium that the company dumpe...
JCI table of contents, November 15 2004
... with, or having had lost, infants with SCID of an unknown
molecular type. All of these individuals had norma...e, approximately 6% of recorded SCID cases have an unknown
molecular basis. Identification of this new mutation in the CD3 epsilon chain will prompt doctors to...
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