Jefferson scientist hopes to answer the question, 'Why is it so hard to quit smoking?'
...epressant, isgaining popularity. "Despite similarities in nicotine levels in the blood and how peoplemetabolize nicotine, people differ in their addictions," Dr. Leone says. Theresearchers suspect that the behavioral trait for nicotine dependence is relatedin part to genetic makeup. It may involve the ge...Primate genus sheds light on great ape and human origins, as reported in Science
... and of generic level importance,"Kelley said. The similarities also raise the intriguing possibility of a linkbetween Eurasian and African apes during the middle Miocene. The Pasalarmaterial is currently being analyzed, and Kelley stressed that the exact natureof this link will remain unclear until this work is ...Learning is growing: scientists investigate the links between memory and brain development
Neuroscientists are discovering striking similarities between the way the braindevelops and the way it stores knowledge. In a special issue of the journalLearning & Memory, research groups from Caltech, Yale University, and otherinstitutions explore this parallel, presenting new studies on how a family...Research puts sting into drama of virus-cell fusion
...-spanning domain wasnot random, and in fact shared similarities with some other types of viruses. Using the Moloney murine leukemia virus as a model, Sanders and Taylorshowed that by replacing part of the sequence they could eliminate membranefusion, while having no effect on any other known function of the p...Wistar scientists find striking similarities between bacterial virus and human adenovirus
...dent, Stacy D. Benson, "this finding reinforcesthe similarities between different biological systems. In fact, we suspect thatthis same architecture will also be found in viruses that infect plants andsimpler animals." PRD1, discovered in the 1970s in the sewers of Kalamazoo, Michigan, infectsbacteria found in t...Stem cells may be powerful gene shuttle
... are ways to improve the method. The discovery of similarities in hematopoietic and muscle stem cells alsoraises important questions about the origin of stem cells and their therapeuticpotential, said Mulligan, an expert in the development of gene transfertechnology and leader of the gene therapy efforts at Harv...Eating soy can lead to dramatic declines in cholesterol, Wake Forest study shows
...f soy because oftheir many chemical and biological similarities to mammalian estrogen," he said. Crouse said that while the cholesterol lowering properties of soy havebeen widely accepted, "the active ingredient had not been previously beenidentified." Speculation previously has ranged from the soy prote...Seeing one weapon from a food-borne pathogen
...way bacteriacause disease. Bjorkman believes that similarities in the structures of invasin andfibronectin suggest the bacterial and host proteins bind to integrins in asimilar way. "Choosing an integrin as a receptor and copying the way a hostprotein binds to it ensures that the bacteria can infect its host," B...Brain compound's anti-aggression effects appear to reverse in monogamous male rodents
...aviors, we're starting to pick up on someimportant similarities in the ways they may be triggered," says Stephen Gammie,a postdoctoral fellow in the Psychology Department at Hopkins. "When they andtheir pups are approached by a stranger, both the male vole and the female mousewith pups experience increased produc...DFG to set up 21 new collaborative research centres in 2000
...ter University aims to examine the differences and similarities found in the construction of diverse matrix structures with a view to understanding the importance of differentiated matrices for morphogenesis and specialised metabolic regulation. Speaker: Prof. Dr. Hans Kresse, Institut fur Physiologische Chemie u...Isolated Barbados population helps researchers zero in on asthma and allergic disease genes
...ssible, Barnes cautions that, even in light of the similarities among families living in Barbados, much of the interaction observed was driven by a single, large, extended family in the study. "This indicates to us that you must have just the right genetic and environmental conditions to find linkage to asthma ge...Robots eavesdrop on cellular discussions
...t cells share an extraordinary number of important similarities with more highly evolved species, including humans. "Listening in" on which proteins physically talk to other proteins is a critical task for researchers, since all cells rely on extensive and ongoing molecular discussions to carry out life's functio...Researchers link genetic defect to 'head-rush' disorder
...enia, and mitral valve prolapse, and it bears many similarities to chronic fatigue syndrome. One of the biochemical irregularities of orthostatic intolerance is high blood levels of the neurotransmitter norepinephrine. "If norepinephrine is high, there are really only two explanations-either a lot more is bei...Food web theory suggests ecology may be governed by general rules
... new food web model, the researchers revealed deep similarities between highly diverse ecosystems, suggesting the ...ribean Island and a desert-suggests there are deep similarities to these very different ecosystems," said Williams. "On a practical level, the model can be tied int...Studies of marine mammals indicate a "breathtaking" ability to dive to great depths
...h Williams, Fuiman and Davis contributed looked at similarities in the abilities of a range of marine mammals to dive almost effortlessly to great depths. In addition to Weddells, other research teams studied the behavior of a northern elephant seal diving in Monterey Bay, Calif., a trained bottlenose dolphin di...Researchers seek clues to help newborns with abnormal lungs
...t. In the past four years, they have found several similarities between human babies born with pulmonary hypoplasia (PH) or small insufficient lungs, with coexistent congenital diaphragmatic hernia (CDH), and the mouse model that they have established. Affected human and mouse newborns have defects of heart and l...New fossils may be first human ancestors out of Africa, say Science authors
...s showed that the Dmanisi fossils shared extensive similarities with the African species Homo ergaster from the well-known site of Koobi Fora in Kenya. The research team discovered that the Dmanisi and Koobi Fora fossils overlap in age as well. Dmanisi contains a jackpot of chronological clues, from the isoto...Success of introduced Argentine ants tied to reduced genetic variation
...s have been introduced to determine if the genetic similarities found in California are found in other regions and are typical of other introduced populations that have been expanding rapidly. They also hope to examine whether genetic bottlenecks are a common phenomenon in the introduction and success of other in...Ancient fossil shows earliest feathers, may end argument about birds' origin
...Terry and John were struck by previously unnoticed similarities between the appendages and feathers," the UNC-CH biologist said. "We then got together as a team at the University of Kansas to study it in tremendous detail using microscopy." The team found that the creature: . bore hollow-shafted feathers almo...Feathers on reptile older than dinosaurs, reported in Science
...Oregon State University, and coauthors, the strong similarities between the fossil feathers and modern day bird feathers suggest an evolutionary link between the two. Although the exact relationship between the reptile, named Longisquama insignis , and modern birds is uncertain, these findings may pose a challe...