Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria
...times resemble the fibers of a shag rug. Moreover, unlike other nanotube structures, these tubes display sensitivity to different agents by changing color and can be trained to kill bacteria, such as E. coli, with just a jab to its cell membrane. How a mere single-step synthesis of a hydrocarbon and a simp...A long-necked sea predator from China described in Science
...cephalosaurus' tooth and fang arrangement which is unlike other protorosaurs, the creature could have attacked with jaws opening sideways like a crocodile. Coauthor Michael LaBarbera from the University of Chicago in Chicago, Illinois proposed a second hunting strategy that would have required participatio...UAF scientists discover new marine habitat in Alaska
...tructures that closely resemble beds of coral. But unlike coral, rhodoliths do not attach themselves to the rocky seabed. Rather, they drift like tumbleweeds along the seafloor until they grow heavy enough to settle and form brightly colored beds. And while corals are animals that filter plankton and other ...Hardy buoys: Texas A&M project predicts oil spill movements
...s when it costs nearly $50 a barrel, spilled oil - unlike milk - could be worth crying about, especially in Texas. A team of Texas A&M University researchers has developed - and continues to refine - a system of buoys in the Gulf of Mexico that can accurately predict the movement of oil spills. Such spills...European common frog found to use novel mating strategy
...for more than one male to impregnate a female. And unlike the females of some frog species, the common frog will not lay eggs if clasped by two males. Since as many as one-third of the eggs may not be fertilized by the first male, however, the opportunity exists for other males to fertilize the remaining eg...New dye directly reveals activated proteins in living cells
...ing detection of protein activation at low levels, unlike current fluorescence methods that require protein over-expression for detection. "For the first time we saw native Cdc42 activity in living cells," Hahn said. "But perhaps the most important aspect of the paper is that we demonstrated a new approach:...Bacteria use 'molecular lasso' to cop copper
...olecules, but what happens next isn't known. Also, unlike a cowboy's lasso, methanobactin has no tether to its mother cell. Therefore, when bacterial cells release their methanobactin molecules, they probably never see them again; instead, they take delivery of copper from methanobactin released by other ce...Mitochondrial genes cause nuclear mischief
...their potential for harm suggests that many NUMTS, unlike much of the rest of the flotsam that litters our genome, may be selected against quickly. Combined with their differential distribution among human ethnic groups, this may make them valuable markers for tracking both long- and short-term trends in hu...Essential smell gene may provide key to new insect repellents
...ne away and test the effect," she says, because -- unlike other insects -- fruit flies are common laboratory organisms with well-understood genetics. The researchers wanted to know whether Or83b worked independently, like other odorant receptors, to sense a specific chemical, or played another more general ...Women who have donated eggs sought for national study
...ted in Great Britain, Canada and Israel. However, unlike in the United States, payment for egg donation in those countries is not permitted. Payment is legal in the United States and women typically can earn $3,000 for donating eggs. Remuneration can go as high as $100,000 for meeting specific criteria s......oth milestone of monumental importance. However, unlike the first moon shot, the real milestone of the human genome project is not a singular event. The genome project's giant leap for mankind is coming not with a single small step taken on one summer's night but with thousands of small steps spread out o...Progress in breast cancer progression
...breast cancer cells were unable become metastatic, unlike those that were injected in nude mice where the NF-kB pathway was not blocked. Taken together, these data provide evidence for an essential role of NF-kB in the induction and maintenance of the transition that cancer cells undergo to become invasive ...JCI table of contents, 16 August, 2004
...breast cancer cells were unable become metastatic, unlike those that were injected in nude mice where the NF-kB pathway was not blocked. Taken together, these data provide evidence for an essential role of NF-kB in the induction and maintenance of the transition that cancer cells undergo to become invasive ...Using statistics to decipher secrets of natural mutation
...cross the species revealed that the CpG mutations, unlike other mutation types, accumulated in a regular clock-like fashion. The analysis also distinguished other sources of naturally occurring mutations and their variation due to biological and biochemical influences, and appears to offer some insight into...Infant rats eagerly accept high concentrations of alcohol upon first exposure
...ssociated with the alcohol. This is of course not unlike adult humans." "In human drinking practice, " noted Elena I. Varlinskaya, research professor at Binghamton University, "comparable blood alcohol concentrations will be reached after about 12 to 15 drinks such as bottles of beer, glasses of wine, or ...Parasitic cowbirds thrive with a less ruthless strategy than cuckoos
...se different strategies. Kilner had proposed that, unlike cuckoos, cowbirds suffer when alone in the nest without the begging assistance of nestmates. While cuckoos are far too big to share the nest and food with any other chicks, Kilner thought that her hypothesis could be tested in the cowbird, which is a...An exotic grass kills trees by hijacking their water
...le working on a class project, Eilts noticed that, unlike other parts of the laboratory grounds, there were almost no palo verde trees within the patches of buffelgrass. Historic photographs taken by Ray Turner of the U.S. Geological Survey showed foothill palo verde trees on the laboratory grounds in loc...NRH1 and Wnt signaling come together in convergent extension
...ty for neurotrophin ligands, the group found that, unlike p75NTR, NRH1 did not bind with neurotrophins, which led them to seek other biological roles for the protein. Experiments in which NRH1 was overexpressed by injecting its messenger RNA directly into very early (4-cell stage) embryos resulted in shorte...Acamprosate: potential medication for treating alcoholism
...lerated but needs to be taken a few times per day, unlike disulfiram and naltrexone, which can be taken once per day." Disulfiram (Antabuse) and naltrexone (ReVia) are the only two medications currently approved for use in the United States for treating alcoholism. Disulfiram blocks the breakdown in...Why does cloning create abnormalities? Scientists take a step towards finding out
...CSI reached the blastocyst stage at the same rate, unlike the clones, where only 30% got that far", said Dr. Takeuchi. "This appears to be due to the abnormal gene expression we saw in the cloned group. This not only explains the developmental impairment of the cloned group, but may in future be helpful ...