Adult Cells Undergo Identity Switch Reported In Science
...row of new mice, where the stem cellschanged their behavior and began generating blood cells. The findings raise thepossibility that in the future adult stem cells could be used to supply avariety of new cells for important therapeutic uses, for example to generatehealthy blood cells for treating patients wit...Researchers Find Genetic Connection To Cigarette Smoking
...r thefirst time that a link exists between smoking behavior and the dopaminetransporter gene (SLC6A3-9). In their study of 289 smokers and 233nonsmokers, they found that individuals with an SLC6A3-9 genotype were lesslikely to be smokers than individuals without that gene. Furthermore, thosewith that gene sta......fthe colonies, tracking all individuals. Dominance behavior or aggressive social interactions occur at a high ...societies, according to O'Donnell. Up to now, this behavior was onlyknown to be expressed by females, both by queens and workers, who usuallyperform most of the...Technologies Track, Map Fish Behavior
...ly isn't associated with fisheries biology,but the behavior of fish could be an important factor in restoring ...lel to the bypass structure. "This complex behavior could be caused by many factors," Johnson said,"such as noise from turbines or the existence of a ne...NSF-Supported New Scientists And Engineers Receive Presidential Award
...nding research on ecological andgenetic factors in behavior and demography of social wasps, and sharing theexcitement of discovery with tomorrow's behavioral biologists. Computer and Information Science and Engineering Pei Cao, Univ. of Wisconsin-Madison. For outstanding innovations in cachemethods to impr...Video And Data Link Provide Unique "Seal's Eye View" Of The World
...advancements inour understanding of the underwater behavior of marine mammals," noted PollyPenhale, who overse...ment, he noted, will allow greater insight intothe behavior of animals that regularly range up to three kilometers and returnsafely to a single, four-foot-wide ...Bullying Behavior: Blame It On Bad Genes?
...ture that aggressive and non-aggressive antisocial behavior havedifferent etiologies." Among the findings they report: Aggressive behavior can be inherited, but social environment plays a highlysignificant role in non-aggressive antisocial...CU Research Team Unravels Mystery Of Larceny Among Tropical Ant Species
.... "On the surface, it looks like counter-intuitive behavior with no simpleexplanation." A paper on the 1998 work in Panama authored by Breed, CU graduatestudents Terrence McGlynn and Erin Stocker and 1998 CU graduate Anne Klein willappear in an upcoming issue of the international entomological journal,"Insec...New Class Of Molecular Cues Guides Nervous System Wiring
... Cell , this seemingly contradictory "Stop-and-Go" behavior of the protein,Slit, opens an intriguing new chapter in understanding how the nervous system iswired, say the scientists. If the researchers can understand the machinerycontrolling such wiring decisions, their insights may lead to new approaches tore...Animals' Behavior Can Hasten Their Extinction
These days a species' behavior may not be in its best interests because whatworks...University in Medford, Massachusetts. Examples of behavior that contributes to extinction include: Cape vultures like to perch on high roosts while foraging--...Easy-To-Understand Book Written To Appeal To Students, Pet Owners
... 3 to 12 weeks is "when puppies learnnormal canine behavior patterns," Casesaid. It is a time when puppies develop species-specific social behavior. Casethen goes on to discuss learning theory andhow to utilize current thoughts on common problems such as aggression andseparation anxiety in training and behavi...Taking The Animal Out Of Animal Testing
...as often as every quarter-second to follow acell's behavior movements. The software runs on a Windows 98 platform andmanages all data acquisition, storage, and analysis. "This method offers a non-invasive technique for testing animal cells," Giaeverexplains. "By electronically eavesdropping on cells, we can e...Researchers Find Unexpected Feature In Plankton Nervous System
...acific Biomedical Research Center team studies the behavior and morphologyof copepods, particularly how anatomy and structure relate to sensory perceptionand reaction. The copepods that have myelin surrounding their axons exhibitconsistently and significantly faster response time to stimulus in laboratorytest...Melatonin Shapes Brain Structure In Songbirds
...o studies the interrelation of hormones, brain and behavior insong birds. "There is a lot of interest in melatonin, particularly in mammals,but there has never been any indication that it affects brain plasticity likethis. The fact that it would have a direct effect on a brain area in birds andinfluence its v...Study Suggests New Approach To Asthma
...e findings offer the first example linkingabnormal behavior of JAK/STAT pathways for cytokine signaling to the developmentof an inflammatory disease. Activation of the JAK/STAT pathway appears to be fundamental to asthma, Holtzmansays, because it was seen in all of the asthmatic subjects regardless of whethe...Researchers Identify Molecule That May Be Key In Pheromone Processing
...Hughes Medical Institute. Many aspects of animal behavior - particularly those relating to courtship andmating - are known to be controlled by pheromones. Although they are detectedvia the nose, most pheromones are received by a structure within the nose calledthe vomeronasal organ (VNO), whereas odors are...Fossil Footprints Show Foot-Movement Similarity In Dinosaurs And Birds
...preserving a three-dimensional record of locomotor behavior in Triassic-period dinosaurs. Reporting in Nature, the researchers said that a spectrum of trackssimilar to the Greenlandic series is produced when a bird, such as a turkey, walksthrough muds of different consistencies. In th...Montana Hantavirus Study Looks At Why The Mouse Goes Into The House
...ne small area for three or four days. That behavior may explain why mice inside the buildings have a higherinfection rate than those captured outside, Douglass said. Blood samples showedthat at one site the infection rate of inside mice was nearly double what it wasoutside. The mice urinate a...Magnetic Fluids More Complex Than Previously Thought
..., the study found a greater-than-expected range of behavior as thestrength of the magnetic field is varied. At very high field strengths, thechains form and cross-link to give the material a solid form. At low fieldstrengths, the chains essentially disintegrate. At intermediate strengths, however, the materia......als withinfractals. "We presume that the healthy behavior is richer and more complex because itrepresents the body's ability to adapt to change," says Ivanov. "The ability ofthe body to adapt to changes in the environment is crucial to survival."The researchers are now working with Mitsubishi of Japan to de...