Streptococcus infects humans by thwarting blood clotting
...ecies and one host get locked in this evolutionary dance and would evolve apart from other host-bacterial pairs -- ending up with a multitude of variants of streptococci, one for each host. "This evolutionary mechanism probably functions for many other pathogenicity factors, not just streptokinase, and pro...Strep disrupts blood clotting to infect humans
...ecies and one host get locked in this evolutionary dance and would evolve apart from other host-bacterial pairs---ending up with a multitude of variants of streptococci, one for each host. "This evolutionary mechanism probably functions for many other pathogenicity factors, not just streptokinase, and prob...Tiny tango: Device sorts microscopic particles with speed and precision
...e particles could be made to slide in a tango-like dance forward or sideways at each obstacle depending precisely on the particle's size. "To suddenly say that there is a deterministic (non-random) way to do this really flies in the face of conventional wisdom," said Austin. "It's something I ne...Household activities release a cloud of dust, increasing exposure to particulate pollution
...ut she also performed the activities. What kind of dance did she do? "Probably best described as solo salsa," she says. "Luckily, I did not take any videotape." Vacuuming was also a large source of particles. Vacuum brushes release deeply embedded particles from the carpet; the motor produces additional pa...MIT student dances with robots
...ted with Gentry on her paper. Gentry's husband and dance partner, Dorry Segev (whom she met through dancing...ealized it was an engineering question: how do you dance well with someone? It would be great to give people mathematical and engineering proofs of why they ......e of Neuron, indicate that perception is a dynamic dance in which hands, eyes and whiskers move towards the world to actively seek out sensation. Prof. Ehud Ahissar's research is supported by the the Carl and Micaela Einhorn-Dominic Institute for Brain Research; the Nella and Leon Benoziyo Center for Neu......entists are granted a rare peek into the intricate dance of life on the molecular level. "This method," says Sagi, "represents more than a major breakthrough in the techniques used to understand enzyme activity. It changes the whole paradigm of drug formulation. Now we can precisely identify which parts of......own and internationally recognised as a pioneer in dance studies and was decisively involved in establishin...h projects and in the exhibitions, conferences and dance festivals which she has organised. Professor Brandstetter is one of the leading figures to advocate ...Fruit fly pheromone receptor first ever discovered linked to specific sexual behavior
...s initiate the courtship ritual, the flies' mating dance stalls when they apparently fail to detect the proper chemical cue from females. The sexually aberrant flies otherwise behaved normally, the researchers report in the Sept. 11, 2003, issue of Neuron. "Scientists have been chasing pheromone receptors ...Purdue scientists discover why we're all lefties deep down
...s in the primordial soup got to partner up for the dance of life." Proteins - larger biomolecules - followe...ft-handed serine was sort of the bouncer at life's dance club," Cooks said. "If you weren't a left-handed amino acid, you couldn't get in to partner up and d...Biology breakthrough could aid understanding of cancer
...he levels of these two compounds, this is a little dance of death in which sometimes the hydrogen peroxide is the winner. But the fact that hydrogen peroxide can actually survive, and even overwhelm the compound that exists to detoxify it must have evolutionary value, the researchers believed. They hyp...Scientists observe nanosize microtubules 'treadmilling' across plant cells
... it grows, it shrinks. But there is a bias in this dance that results in growth over time. On the other end, the activity is smoother. It shortens slowly, it pauses, then some more gets removed and it pauses again. So the behavior at the two ends is very different, and the combination of the two behaviors...Researchers determine fundamental mechanisms involved in immune response
...dies. His team's findings explain the genetic line dance by which an otherwise generic immunoglobulin (Ig), or antibody, molecule acquires the genetic components that encode for the structural characteristics it needs to activate appropriate pathways to eliminate specific types of invaders, or antigens. Th...Bodys own antibodies may drive new strains of HIV
... force its ongoing evolution into new strains that dance around the antibody response and continue to replicate. "The neutralizing antibodies are exerting a very strong selective pressure on the virus, and the virus is continually mutating to avoid it," said Richman, a noted AIDS researcher who recently w...Purdue researchers connect life's blueprints with its energy source
...lecules were among the first to partner in Earth's dance of life." On a more practical level, the discovery could have immediate technical applications - such as driving a Lilliputian motor of the sort Guo's team has recently constructed. "I think RNA can be made to do mechanical work," he said. "ATP bind......wo," in this case, are sperm and egg, whose lively dance launches an organism's developmental routine. Despite the importance of the sperm-egg interaction, "we don't know at the molecular level how this works in any organism," said Greenstein, Ph.D., associate professor of Cell & Developmental Biology at V...UCR entomologists report bee-dancing brings more food to honeybee colonies
...the communication of distance and direction in the dance language can increase the food collection of honey...les, the greater the distance to the nectar. "The dance language is the most complex example of symbolic communication in any animal other than primates," s...Recreational use of the drug 'Ecstasy' causes new kind of brain damage
... that young adults typically take during all-night dance parties cause extensive damage to brain dopamine neurons in nonhuman primates. Brain dopamine cells help control movement, emotional and cognitive responses, and the ability to feel pleasure, according to the study, published in the September 27 iss...Cocaine use in warm environments impairs body's cooling mechanisms -- and can be lethal
...her, crowded nightclubs or rave parties all-night dance parties where illicit cocaine use is common according to researchers at UT Southwestern Medical Center at Dallas. The researchers discovered that cocaine elevates body temperature by impairing the body's ability to increase skin-blood flow, to sweat...From arts to neurobiology versatile Duke scientist chosen for NSF Waterman Award
...arnering cheers at his 1983 high school graduation dance performance (at the New York High School for the Performing Arts) for doing Soviet-style lifts in a War and Discord pas de deux, or engendering the more sedate affirmations from colleagues for his studies of vocal learning in songbirds, Jarvis has ex...