Newborn neurons like to hang with the 'in' crowd
... of Nature Neuroscience. At first, they gingerly sniff out pre-existing connections between brain cells but as the new neurons mature over time they get emboldened and muscle out the old guys. "Adding new neurons could be a very problematic process if newborn cells would make connections all over the pla...New findings in smell and taste
... cooperativity within the olfactory bulb when rats sniff odors. Dousing the Flame on Your Tongue with Pharmacology - The spicy hot sensation from peppers is due to a chemical, capsaicin, which activates a receptor in your tongue. In studies using mice, Scientists at Redpoint Bio Corp have used...Researchers find best way to detect airborne pathogens
COLUMBUS , Ohio Current methods used to sniff out dangerous airborne pathogens may wrongly suggest that there is no threat to health when, in reality, there may be. But researchers have found a better method for collecting and analyzing these germs that could give a more accurate assessment of...Instruction manual for creating a molecular nose
...eal benefit at times: this kind of biosensor could sniff out poisons, explosives or drugs, for instance. Researchers at the Max Planck Institute for Polymer Research and the Max Planck Institute of Biochemistry recently revealed a technique for integrating membrane proteins into artificial structures. Memb...Cloning the smell of the seaside
...uts at the Christmas dinner table! - and the birds sniff out their plankton food in the lonely oceans at astonishingly low concentrations. Scientists have known about DMS for many years but the genes responsible for its production have never before been identified. The new findings will be published in t...Contrary to common wisdom, scientist discovers some mammals can smell objects under water
... mammals, like rats and mice. "Rats and mice don't sniff the way we do," Catania said. "They push air 'out-in out-in' in a fashion strikingly similar to what the star-nosed mole is doing, except that it is doing it under water." Catania mounted a high-speed video camera so that it pointed up through the bo...Researchers find biological clock for smell in mice
... a little cedar oil on a Q-tip and allowed mice to sniff it for five minutes. "We then preserved their brains and counted the number of olfactory bulb cells that had been activated by the odorant," Herzog said. "The gene cFOS is a marker for cells that were activated by the stimulus. We recorded the ex...New roles for growth factors: Enticing nerve cells to muscles
...extend tentacle-like protrusions called axons that sniff their way through a labyrinth of attractive and repulsive chemical cues that guide them to their target. While several recent studies discovered molecules that repel motor neuron axons from incorrect targets in the limb, scientists at the Salk Insti...Mutant mice show key autism traits
...example, they were far less likely to approach and sniff new mice introduced into their cage, compared to normal mice. And while normal mice show markedly less interest when such new mice are later reintroduced, the mutant mice did not show such a reduction in interest. This abnormality indicated "impaired...New study examines how sense of smell affects mating and aggression in mice
...ale and put her in a cage, the male will initially sniff her, a process known as chemoinvestigation, and th...pe male encounters another male, he will typically sniff the male and then initiate a fight. However, the mutant males were defective in sniffing the test wi...Teaching worms good taste: Researcher reveals the cell biology of learning at ASCB meeting
...ens. Adult worms raised on the toxic diet took one sniff of the pathogens and headed for OP50. Those raised on OP50 didn't know the difference. They dug in without preference. "This experience-based olfactory change is distinct from adaptation and appears to represent a form of associative learning, simil...Fast, accurate detection of explosives on airport luggage possible
... it requires to take a breath, this technology can sniff the surface of a piece of luggage and determine whether a hazardous substance is likely to be inside, based on residual chemicals brushed from the hand of someone loading the suitcase," said Cooks, who is the Henry Bohn Hass Distinguished Professor o...Study shows humans have ability to track odors, much like bloodhounds
...ability of dogs, we apparently have the ability to sniff out and locate odors, according to a new study by scientists from the University of California, Berkeley. Student volunteers presented with odors to one nostril or the other could reliably discern where the odor was coming from, and functional magnet...Harnessing microbes, one by one, to build a better nanoworld
..., skyscrapers, mailrooms and other public areas to sniff for dangerous biological agents that might be used in a bioterror event. The device could be constructed, according to Beck, utilizing the natural features bacteria and other microbes use to sense their environments. The wired bacterial cells, couple...No blind mice, thanks to UF scientists
...akes SDF-1 at the injury site and the repair cells sniff it out. The concentration of SDF-1 is higher where the cut occurs and it quickly dissipates. But the eye is such a unique place, you've got this bag of jelly -- the vitreous -- that just sits there and it fills up with SDF-1. The SDF-1 doesn't break ...Scientists name world's whiffiest cheese
...ctronic nose as well as a human olfactory panel to sniff out those with the strongest scent. Fifteen cheeses were selected with the help of cheese experts in France and the UK and put through the smelly stakes. Dr Stephen White said: "The results suggest that electronic nose technology could be a u...Menssana research at NJIT receives kudos for FDA-approved breath test
... research has taken breath analysis way beyond the sniff test. In February 2004, the federal Food and Drug Administration approved the marketing of Menssana's Heartsbreath test. The test determines whether patients with heart transplants are showing signs of rejecting the new heart. The FDA said the test...