Ancient marine invasion sheds light on diversity
...eterogeneity of habitat. They also want to figure out which species invaded, where they came from and if they replace species or simply add to the mix. "We are fairly certain that the invasion occurred because of a climate change," says Patzkowsky. "We would like to know if the invasion caused extinct...New program examines stem cells' potential to repair, replace damaged tissue
...oming depleted. Is it because stem cells are dying out and not being replaced? Is it because you have other hormones being produced that interfere with the action of stem cells?" To pursue answers, the program's growing faculty cuts across MCG schools as well as other universities and facilities to incl...The blotchier the face, the better the wasp
...g the high-quality symbol of a blotchy face turned out to be wimps, they got harassed more than wasps who...c container and let them fight. The wasps duked it out using a combination of pacing about, having staring contests and grappling with one another. It took...Research effort seeks A's to gene expression Q's
...rmous quantities of gene-sequence data are pouring out of labs thanks to dramatic gains in DNA sequencing...t stringent criteria the three agreed on only four out of 275 genes identified. NIST's multidisciplinary Metrology for Gene Expression Program seeks to imp...Health concerns: Mosquito mapping may help
...ance exists," Olson said. "It's a bad time to find out you've got it (resistance) in the middle of a disease outbreak. It is better you take care of it well in advance." The Experiment Station has developed a Mosquito Control Research Initiative that will be submitted to the next session of the...Insecticide resistance in mosquitoes being studied
...ly the time for mosquito control officials to find out their pesticides aren't working. Avoiding that pro... a certain degree. It's going to take people going out into the field and learning more about the mosquitoes: the biology of the mosquito and how to contro...Families who eat out pass up fruits and veggies
...Saint Louis University finds that families who eat out are more likely to skimp on the fruits and vegetab...rt disease and cancer. Parents who frequently eat out are also less likely to have fruits and vegetables available at home. The reason families gave for n...Drug may hinder recovery from heart attacks
...y production. Movement of the base, HCO3-, into or out of a cell will alkalinize or acidify the cell. Our cells carefully control the concentration and movement of HCO3- across the plasma membrane by regulation of bicarbonate transport proteins (BT) that can rapidly catalyse the transmembrane movement of...Old riverbed keeps chemicals from entering Ohio River
...pected. Ever since, Svitana has tried to figure out why. He continued monitoring the pools strange behavior after becoming a doctoral student in geological sciences at Ohio State University in 2002. Wednesday, at the Geological Society of America meeting in Denver, Svitana reported that he may have...Ancient creature fossilized by the bacteria that ate it
...tation, they came to a cliff face which had thrust out of the ground, exposing layers of brown volcanic rock with a bold ribbon of tan limestone snaking in-between. Though the scientists could see arthropod fossils exposed in the rock as they gathered their samples, it wasnt until they ret...Reassuring findings from first study on sperm donor identification
...or positive response to their origins. More than 4 out of 5 said they were likely to ask for the donor's identity and try to contact him, but few saw him as being an important person in their lives and not one reported wanting any money from him. The top question the young people wanted answered was 'wha...New gene target found for common brain tumors in children
...a cells and blocking their activation would cancel out some of the drug's effects. "The net effect of any drug will depend on how much of each Notch1 and Notch2 is present, and since we found more Notch2, we think the scale can be tipped toward stopping the cancer," speculates Eberhart. Close t...Extinction in ocean's mud presages key ecological changes
...may seem remote and unimportant, Cardinale pointed out that oceans cover 70 percent of the Earth's surface, and that the productivity of the sea is intricately linked to sediments that generate nutrients and food for other organisms such as fish. In places where human activities have disrupted marine sed...Rethinking new therapies for Crohn's disease at U.Va.
...e production of the type 1 cytokine TNF. He points out that infliximab therapy does not relieve Crohn's symptoms or induce remission in some patients. Plus, type 1 cytokines are important in combating infections, and blocking them can reactivate latent tuberculosis in some patients. Cominelli also w...Acetaminophen shows positive in vivo cardioprotective effects in heart attack, arrhythmia
...ted," they added. Finally, the researchers pointed out that the current experiment directly administered acetaminophen at two intervals during the induced heart attack and that studying chronic, small-dose ingestion might yield useful findings....By impounding iron, FHC foils cell suicide, fuels inflammation
...rent subset to cause programmed cell death. To map out those genes, Franzoso and colleagues used a "death-trap" screen. They exposed cells to TNF-, a biochemical signal that can trigger cell death, then collected DNA from cells that survived. Several rounds of this process produced a library of potenti...UCSD researchers find effective treatment for unusual fever syndrom caused by cold exposure
Remember when Grandma used to say 'don't go out in the cold; you'll get sick'? It turns out that she was right for a small number of people who have a condition called familial cold autoinflam...Automated scans let scientists track drugs' broad effects on cells
... limitations as medicines." "We actually started out on this project thinking that this could be a good research tool," adds Wu, research fellow at the Bauer Center. "We've now discovered, to our surprise, that it may also prove a powerful tool for drug discovery." High-throughput cytological prof...New study links low fish supply to increased bushmeat hunting
...he country, has brought up in the past. He pointed out in a February 2004 article in National Resources F...pressed concerns about the bushmeat trade, phasing out subsidies to their own fleets offers at least a short-term route to limit the trade while simultaneo...Order of species loss has important biodiversity consequences, grassland study reveals
...rather than realistic patterns of loss, which turn out to be quite dissimilar. "We replicated natural pa...oots are at different depths," she said. "It turns out that very rare things can matter a lot." Other research has shown that more diverse communiti...