Scientists discover unique source of stem cells
...eth came out, Shi said he was better prepared. He placed the tooth into a liquid medium used to culture cells, drove it to the laboratory, and extracted the dental pulp. Soon thereafter, he succeeded in isolating living stem cells from the tissue, a discovery that would lead to the collection of more exfo...Evidence shows the heart has stem cells able to regenerate muscle tissue lost to disease, wear
...c cell types. When the progeny of these cells are placed into a heart that has suffered muscle loss followi...to keep producing the exact same cells needed once placed into the body. A second proof that cells with stem cell characteristics reside in the adult myocardi...Prenatal exposure to nicotine increases risk of apnea in brains of newborn rats
...en the brain stem and spinal cord were removed and placed in a plasma-like solution with oxygen, a method that allows the researchers to measure breathing rhythm in a highly controlled setting. This method also allows the addition of drugs and other chemicals to examine how various agents change the breathi...High-producing dairy cows are not more susceptible to illness
...re susceptible to disease due to the extra demands placed on their bodies. To test this idea Esther Kornalijnslijper infected the udders of a number of cows with the bacterium E. coli, which causes mastitis. She then studied how long it took before the pathogenic organisms had disappeared from the cows' bod...A derivative of the green tea leaf may help with Metabolic Syndrome X, a potentially deadly disorder
...imatized to their surroundings, they were randomly placed in one of four experimental groups. Rats in a normal diet placebo group were fed normal rat forage. The other rats were fed a high-calorie diet, including a high-calorie diet placebo, for a period of 56 days. Two treatment groups were given Tegree...Study says: 'whey' to greater muscle strength is through training and protein supplements
...stance-trained males were matched for strength and placed into one of four groups: creatine/carbohydrate (CrCHO), whey isolate (W), creatine/whey isolate (CrW) or a carbohydrateonly (CHO). All subjects undertook the same fully supervised resistance training program three times per week and consumed 1.5gms o...In a noisy world, how can the senses project and receive information at the same time?
...When recording false stridulation, the cricket was placed upside down in a Plasticene well and its ventral cuticle was removed to expose the abdominal and thoracic ganglia. The thoracic or thoracic and abdominal nerves were cut, except for prothoracic nerve #5, which contains the auditory afferents. Care wa...Tufts environmental engineers tackle destructive nutrients in nations waterways
... where information will be processed, archived and placed in publicly accessible venues such as dial-in phon...s. Color-coded "water quality" flags also will be placed at key riverfront locations. The Tufts team, and its partners from the city of Somerville and the My...Scientists report important data in stem cell debate
...at is, cells have been extracted from the body and placed into an artificial medium, where they behave differently than in their natural environment, a little like trying to study a fish out of water. Secondly, the other studies involved cells from tissue sections, which literally provide scientists with ...Termites repelled by catnip oil
...eling. To test vertical tunneling, the researchers placed yellow pine sapwood in the bottom of a test tube f...nsparent box of sand, again with the tempting pine placed across the barrier from the termites. In both tests, catnip oil reduced or eliminated termite tunnel...Supplements that increase the effects of resistance exercise identified
...discrimination of gender, and no restrictions were placed as to the exercise history of the subjects, although training was recorded as a variable. Only randomized, placebo-controlled studies published in peer review journals were selected. Studies were excluded if there was any dietary restriction imposed...Diamond in the rough...and on the chip
... be about the size of a postage stamp and could be placed or sprinkled anywhere, acting like a "bio-cell phone," the developers say. These new sensors would detect biological molecules of interest and also take advantage of the signal amplification and processing properties of microelectronics. And, they...Bacterial viruses make cheap easy vaccines
...ent bioterrorism threat when sudden demands may be placed on vaccine stocks....Oxygen deficiency is an endocrine disruptor in fish
...s reared under normal conditions and the other was placed in a hypoxic system, receiving about 15 percent of the oxygen given to the first group. During the 12-week experiment, researchers measured a number of parameters to monitor the development of the fish. They noticed major changes in hormone levels i...Optical trap provides new insights into motor molecules - nature`s ultimate nanomachines
...side a computer chip to nanoimplants that could be placed under the skin and deliver minute doses of medication to targeted cells. If devices are to become reality, researchers first need to solve a fundamental mystery about kinesin: How does it move? A new laser microscope designed by Stanford University s...First population study of GM mosquitoes highlights difficulties facing malaria control technique
... ability to survive, when the modified insects are placed in a natural population they have relatively low competitiveness. Professor Andrea Crisanti of the Department of Biological Sciences, and senior author of the paper said: "These population studies are absolutely critical to the regulatory processes t...Larger nuts end up further from tree
... the ground of the rainforest in French Guyana. He placed thousands of nuts on the ground in the forest. Each nut was marked with a numbered fluorescent thread. Using video cameras he observed which animals removed the nuts. He then traced the nuts using the threads sticking out of the ground and followed t...Leatherback sea turtles careening towards extinction
... and Mexican trawl fisheries. TEDs are metal grids placed in the backs of trawl nets that allow the turtles to slip out of harm's way instead of being entrapped in the net, then drowning. Since the implementation of these efforts in the late 1980's, Kemp's ridleys have been increasing 11-13% per year, from ...Opening the black box: Scientists gain new tools to learn about the near-shore environment
...outside reserves. Layers of ecosystem information placed in a geographic context by GIS (global information systems) computer mapping, which provides an accessible summary of this complex information that can be used by computer search engines to list alternative management solutions. The authors explain ......, we have one transect with about 100 dynamometers placed about 18 inches apart. What we found is that the most exposed place will see about 13 times the force as the least exposed place just a few feet away." Denny and his students are in the process of designing a high-tech version of the dynamometer that...