Researchers unlock secrets of directional cell movement
... like many chemotactic cells. This "social amoeba" responds to a chemoattractant known as cAMP, and its response allows it to commune with its fellow amoebae in survival maneuvers. Research in the last decade on Dictyostelium demonstrated that cells use receptors coupled to G-proteins to sense chemoattractan...Today's Science for America's Tomorrow: the USGS FY 2001 Budget
...sources for the Future Understanding how the land responds to change is essential for Americans' continued enjoyment of the natural landscape, Groat noted. With an increase of $15.3 million, USGS will develop tools for understanding how the land interacts with the oceans and the air as well as the many uses...Bees wearing reflectors help scientists track insects training flights
...ound radar reflections because only the tagged bee responds with the frequency being broadcast in a field. The findings suggest that orientation flights allow bees in a progressive way to visit different positions and view different, and larger, portions of the landscape around the hive. The scientists now wa...Recombinant protein may play key role in treating immunocompromised patients
...e. When germs enter the body, the immune system responds in two ways. One arm of the immune system, led by immune cells called B cells, works mainly by secreting antibodies into the bodys fluids. These antibodies seek and destroy the germs circulating in the bloodstream. However, antibodies are useless ......e only true long-term data on how a patient's body responds to hosting an implant, as well as the final condition of the implant. Even so, there has not been any systematic effort developed in the United States for implant retrieval analysis or data banking. The objective of the conference is to assess the o...NIH conference to assess state of medical implants
...e only true long-term data on how a patient's body responds to hosting an implant, as well as the final condition of the implant. Even so, there has not been any systematic effort developed in the United States for implant retrieval analysis or data banking. The objective of the conference is to assess the o...Brain releases marijuana-like substance in response to pain, study finds
...e to observe pain modulation because the brain responds in the same way. Researchers used atmospheric pressure-chemical ionization mass spectrometryto measure the molecular weight of anandamide. This multistep method permitted the detection of theextremely small amounts of the anandamide. The......have shown that in young animals the NMDA receptor responds even whenthe two signals are relatively far apart, so it's easy to make connectionsbetween events and to learn. After adolescence, the receptor becomes lessresponsive, making learning more difficult. This phenomenon of declining memoryhas persisted t...Flea collars may expose children to insecticides
...h." Primarily funded by EPA, the flea collar study responds to the data collectionrequirements of the Food Quality Protection Act of 1996, which stipulates thatall sources of exposures to pesticides must be considered when determiningoverall risk....Plants, pathogens engage in trench warfare
...cted by the arms racehypothesis, then as the plant responds to a rapidly evolving pathogen, we wouldexpect there to be many changes in the Rpm1 protein. Instead, it seems that itreally hasn't changed for close to 10 million years, the age of the species'common ancestor" explains Eli Stahl, a graduate student......his experiment we'll be cataloging every gene that responds togravity," said Mykles. "We currently have just a few pieces of this immensejigsaw puzzle, but with this project we hope to get most of them." According to Reddy, "Our main goal is to find out how plants can sensethe gravity signal, to dete...A new view of visual system development
July 23, 1999 -- Understanding how the brain responds to and interprets visualinformation has occupied researchers for decades. And like the ever-changingpatterns of a kaleidoscope, science's view of the visual system shifts with eachnew twist of insight. Research in the laboratory of Howard Hughes Med...Duke researchers discover protein that can alert immune system to fight cancer
... act as a danger signal tothe immune system, which responds by trying to eliminate the insult at theprecise location in the body signaled by these proteins." The work, which was supported by the National Institutes of Health, ispart of Duke's Center for Genetic and Cellular Therapies continuing effort......tokine molecule,which is synthesized in the brain, responds and acts appropriately to regulatethe release of t...olecule, suppressorof cytokine signaling (SOCS-3), responds to LIF within the pituitary, allowingvery fine tuning of the pituitary response to brain and periphe...Study Suggests New Approach To Asthma
...d bymolecules in the JAK/STAT family. This pathway responds to cytokines releasedduring viral infection. When it is activated, a protein called Stat1 moves intothe nucleus and switches on certain genes. The products of these genes attractimmune cells to fight the virus. The JCI paper suggests that the same JA......regulated could offer insight into howthe receptor responds to stress signals and initiates the production of sexsteroids. "This molecule is at the cross-roads of how endocrine signaling isachieved," said Ingraham. The finding could also lead to a recognition of a more generalligand-independent mechanism of a......enesequences for a close match to the protein that responds to capsaicin, themolecule that gives hot peppers their bite. Two years ago, the same researchteam identified the capsaicin receptor, which enables us to detect the heat ofchili peppers, as well as temperatures of around 100 degrees. "While the capsai...Findings Challenge Notion Of Withholding Food To Fight Rotavirus
...able late last year. "Our data show that an animal responds to nourishment -- that it can stillabsorb and clear the infection even during theperiod of diarrhea," said H. Rex Gaskins, a professor of animal sciences andveterinary pathobiology and a researcher in theU. of I. Division of Nutritional Sciences. "If......lows a cell to 'morph' into different shapes as it responds toimportant changes in its environment. And one of the hottest fields in neurobiology aims to understand how thehand-shaped end of a growing neuron, called the growth cone, explores theterritory it traverses on its way to its target tissue. ...Scientists Discover Key Cog In Receptor That Governs Ripening
...e plays in blue-green alga, which neithermakes nor responds to ethylene. "Although we don't know, this new finding suggests where the plant receptor camefrom," Bleecker said. "It is much more ancient than plants. It shows that partsof proteins are recruited in evolution and mixed and matched" to suit new need...